Ultrafast optical spectroscopy of strongly correlated materials and high-temperature superconductors: a non-equilibrium approach

Abstract

In the last two decades, non-equilibrium spectroscopies have evolved from avant-garde studies to crucial tools for expanding our understanding of the physics of strongly correlated materials. The possibility of obtaining simultaneously spectroscopic and temporal information has led to insights that are complementary to (and in several cases beyond) those attainable by studying the matter at equilibrium. Multiple phase transitions and new orders arising from competing interactions are benchmark examples where the interplay among electrons, lattice, and spin dynamics can be disentangled because of the different timescales that characterize the recovery of the initial ground state. The nature of the broken-symmetry phases and of the bosonic excitations that mediate the electronic interactions, eventually leading to superconductivity or other exotic states, can be revealed by observing the sub-picosecond dynamics of impulsively excited states. Recent experimental developments have made possible to monitor the time-evolution of both the single-particle and collective excitations under extreme conditions, such as those arising from strong and selective photo-stimulation. Here, we review the most recent achievements in the experimental and theoretical studies of the non-equilibrium electronic, optical, structural and magnetic properties of correlated materials. The focus will be mainly on the prototypical case of correlated oxides that exhibit unconventional superconductivity or other exotic phases, even though the discussion will extend also to other topical systems. The necessity of extending the actual experimental capabilities and the numerical and analytic tools to microscopically treat the non-equilibrium phenomena beyond the simple phenomenological approaches represents one of the most challenging new frontier in physics.

Review, to appear in Advances in physics. 188 pages, 637 references, 77 figures

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• Anisotropic electron-phonon interaction in the cuprates
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• Optical Conductivity in Mott-Hubbard Systems
• Single particle and collective excitations in the one-dimensional charge density wave solid K0.3MoO3 probed in real time by femtosecond spectroscopy
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• Tracking Cooper Pairs in a Cuprate Superconductor by Ultrafast Angle-Resolved Photoemission
• Electronic Origin of the Inhomogeneous Pairing Interaction in the High-Tc Superconductor Bi2Sr2CaCu2O8+d
• Hund's coupling key role in multi-orbital correlations
• Strongly Correlated Superconductivity: a plaquette Dynamical mean field theory study
• Ultrafast Insulator-Metal Phase Transition in VO2 Studied by Multiterahertz Spectroscopy
• Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
• Temporal correlations of superconductivity above the transition temperature in La${}_{2-x}$Sr${}_x$CuO${}_4$ probed by terahertz spectroscopy
• Momentum space anisotropy and pseudogaps: a comparative cluster dynamical mean field analysis of the doping-driven metal-insulator transition in the two dimensional Hubbard model
• Ultrafast transient generation of spin-densitywave order in the normal state of BaFe2As2 driven by coherent lattice vibrations
• Disentangling the electronic and phononic glue in a high-Tc superconductor
• Dynamical mean-field theory of the small polaron
• Dynamical Breakup of the Fermi Surface in a doped Mott Insulator
• Anomalous superconductivity and its competition with antiferromagnetism in doped Mott insulators
• Fluctuating charge density waves in a cuprate superconductor
• Amplitude `Higgs' mode in 2H-NbSe2 Superconductor
• Broken translational and rotational symmetry via charge stripe order in underdoped YBCO
• Rotationally-invariant slave-boson formalism and momentum dependence of the quasiparticle weight
• Electron-Phonon Coupling in High-Temperature Cuprate Superconductors Determined from Electron Relaxation Rates
• Transfer of Spectral Weight in Spectroscopies of Correlated Electron Systems
• Ground-State Decay Rate for the Zener Breakdown in Band and Mott Insulators
• Semimetal to semimetal charge density wave transition in 1T-TiSe${}_2$
• Topological Defects Coupling Smectic Modulations to Intra-unit-cell Nematicity in Cuprate
• Quantum interference between charge excitation paths in a solid state Mott insulator
• Strong coupling superconductivity, pseudogap and Mott transition
• Pseudogap opening and formation of Fermi arcs as an orbital-selective Mott transition in momentum space
• Kinetics of a superconductor excited with a femtosecond optical pulse
• Universal electric-field-driven resistive transition in narrow-gap Mott insulators
• Interaction quench in the Hubbard model: Relaxation of the spectral function and the optical conductivity
• Optically induced superconductivity in striped La2-xBaxCuO4 by polarization-selective excitation in the near infrared
• Pair-breaking and superconducting state recovery dynamics in MgB2
• Electric-Field-Induced Resistive Switching in a Family of Mott Insulators : towards Non-Volatile Mott-RRAM Memories
• Nonthermal antiferromagnetic order and nonequilibrium criticality in the Hubbard model
• Spatially resolved ultrafast magnetic dynamics launched at a complex-oxide hetero-interface
• Evidence for a Fermi liquid in the pseudogap phase of high-Tc cuprates
• Femtosecond Quasiparticle and Phonon Dynamics in Superconducting YBa2Cu3O7 Studied by Wideband Terahertz Spectroscopy
• Dielectric breakdown of Mott insulators in dynamical mean-field theory
• Doping dependent optical properties of Bi2Sr2CaCu2O8+d
• Femtosecond "snapshots "of gap-forming charge-density-wave correlations in quasi-two-dimensional dichalcogenides 1T-TaS2 and 2H-TaSe2
• Dynamical band flipping in fermionic lattice systems: An ac-field-driven change of the interaction from repulsive to attractive
• Electron-lattice interaction and its impact on high Tc superconductivity
• Thermalization of a pump-excited Mott insulator
• Nodal quasiparticle meltdown in ultra-high resolution pump-probe angle-resolved photoemission
• Energy-gap dynamics of superconducting NbN thin films studied by time-resolved terahertz spectroscopy
• Far-infrared optical conductivity gap in superconducting MgB2 films
• Diffusion of Nonequilibrium Quasiparticles in a Cuprate Superconductor
• The Electron-Phonon Interaction in the Presence of Strong Correlations
• Nonequilibrium Steady State of Photoexcited Correlated Electrons in the Presence of Dissipation
• Controlled vaporization of the superconducting condensate in cuprate superconductors sheds light on the pairing boson
• LDA+Gutzwiller Method for Correlated Electron Systems: Formalism and Its Applications
• Electron relaxation in metals: Theory and exact analytical solutions
• Dynamical mean-field theory for pairing and spin gap in the attractive Hubbard model
• Resistive switching induced by electronic avalanche breakdown in GaTa${}_4$Se${}_{8-x}$Te${}_x$ narrow gap Mott Insulators
• Hidden magnetic excitation in the pseudogap phase of a model cuprate superconductor
• Momentum-Resolved Ultrafast Electron Dynamics in Superconducting Bi2Sr2CaCu2O8+delta
• Transverse optical plasmons in layered superconductors
• Non-linear doublon production in a Mott insulator --- Landau-Dykhne method applied to an integrable model
• Optical determination of the relation between the electron-boson coupling function and the critical temperature in high T${}_c$ cuprates
• Quantum Quenches in the Hubbard Model: Time Dependent Mean Field Theory and The Role of Quantum Fluctuations
• Loss of nodal quasiparticle integrity in underdoped YBa2Cu3O6+x
• Optical conductivity and the correlation strength of high temperature copper-oxide superconductors
• Competition between d-wave superconductivity and antiferromagnetism in the 2D Hubbard model
• Revealing the high-energy electronic excitations underlying the onset of high-temperature superconductivity in cuprates
• Quenching Bloch oscillations in a strongly correlated material
• Electron-phonon Interaction close to a Mott transition
• Polaron Crossover and Bipolaronic Metal-Insulator Transition in the half- filled Holstein model
• Bosons in high temperature superconductors: an experimental survey
• Snapshots of the retarded interaction of charge carriers with ultrafast fluctuations in cuprates
• Dispersive spin excitations in highly overdoped cuprates revealed by resonant inelastic x-ray scattering
• Photoinduced Changes of Reflectivity in Single Crystals of YBa2Cu3O6.5 (Ortho II)
• Optical properties of correlated materials -- Generalized Peierls approach and its application to VO2
• Photo-induced states in a Mott insulator
• Polarization modulation time-domain terahertz polarimetry
• Local Order and the gapped phase of the Hubbard model: a plaquette dynamical mean field investigation
• Direct observation of Higgs mode oscillations in the pump-probe photoemission spectra of electron-phonon mediated superconductors
• Bi-directional ultrafast electric-field gating of interlayer transport in a cuprate superconductor
• Single-particle and collective mode couplings associated with 1- and 2-directional electronic ordering in metallic RTe${}_3$ (R = Ho, Dy, Tb)
• Pseudogap temperature as a Widom line in doped Mott insulators
• Energetic balance of the superconducting transition across the BCS-Bose E instein crossover in the attractive Hubbard model
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• Disentanglement of the electronic and lattice parts of the order parameter in a 1D Charge Density Wave system probed by femtosecond spectroscopy
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• Ultrafast charge recombination in photoexcited Mott-Hubbard insulator
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• Abrupt transition in quasiparticle dynamics at optimal doping in a cuprate superconductor system
• Ultrafast transient response and electron-phonon coupling in the iron-pnictide superconductor Ba(Fe(1-x)Co(x))2As2
• Direct Role of Structural Dynamics in Electron-Lattice Coupling of Superconducting Cuprates
• Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study
• Nonthermal symmetry broken states in the strongly interacting Hubbard model
• Proposed parametric cooling of bilayer cuprate superconductors by terahertz excitation
• Energetics of superconductivity in the two dimensional Hubbard model
• Time-dependent Gutzwiller approximation for the Hubbard model
• Anomalies of the infrared-active phonons in underdoped YBCO as an evidence for the intra-bilayer Josephson effect
• Nature and Raman signatures of the Higgs amplitude mode in the coexisting superconducting and charge-density-wave state
• Gutzwiller density functional theory for correlated electron systems
• Direct observation of the coexistence of pseudogap and superconducting quasi-particles in Bi2212 by time-resolved optical spectroscopy
• Momentum dependent ultrafast electron dynamics in antiferromagnetic EuFe2As2
• Steady-state nonequilibrium density of states of driven strongly correlated lattice models in infinite dimensions
• Relaxation dynamics of the Holstein polaron
• Quantum Dynamics of the Hubbard-Holstein Model in Equilibrium and Non-Equilibrium: Application to Pump-Probe Phenomena
• Nodal/Antinodal Dichotomy and the Two Gaps of a Superconducting Doped Mott Insulator
• Kinetic energy change with doping upon superfluid condensation in high temperature superconductors
• Dielectric Breakdown in a Mott Insulator: Many-body Schwinger-Landau-Zener Mechanism studied with a Generalized Bethe Ansatz
• Damping of Bloch oscillations in the Hubbard model
• Mechanism of Ultrafast Relaxation of a Photo-Carrier in Antiferromagnetic Spin Background
• Band-dependent Quasiparticle Dynamics in Single Crystals of the Ba${}_{0.6}$K${}_{0.4}$Fe${}_2$As${}_2$ Superconductor Revealed by Pump-Probe Spectroscopy
• Witnessing the formation and relaxation of massive quasi-particles in a strongly correlated electron system
• Optical spectroscopy of superconducting Ba{0.55}K{0.45}Fe2As2: evidence for strong coupling to low energy bosons
• Exploring the Dark Side of Cuprate Superconductors: s-wave Symmetry of the Pseudogap
• Interaction quench in the Holstein model: Thermalization crossover from electron- to phonon-dominated relaxation
• Quasiparticle dynamics and gap structure in Hg1223 investigated with femtosecond spectroscopy
• Theory of time-resolved optical spectroscopy on correlated electron systems
• Doping Dependence of the Redistribution of Optical Spectral Weight in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Ultrafast insulator-to-metal phase transition as a switch to measure the spectrogram of a supercontinuum light pulse
• Ultrafast modulation of the chemical potential in BaFe${}_2$As${}_2$ by coherent phonons
• Signatures of nonadiabatic BCS state dynamics in pump-probe conductivity
• Pseudogap of metallic layered nickelate R2-xSrxNiO4 (R=Nd, Eu) crystals measured using angle-resolved photoemission spectroscopy
• Cluster-size dependence in cellular dynamical mean-field theory
• Real-time decay of a highly excited charge carrier in the one-dimensional Holstein model
• A new collective mode in YBCO observed by time-domain reflectometry
• Electric-field-driven resistive switching in dissipative Hubbard model
• Non-equilibrium dynamics of the driven Hubbard model
• Ultrafast Quenching of the Exchange Interaction in a Mott Insulator
• Optical sum rule violation, superfluid weight and condensation energy in the cuprates
• Finite-wavevector Jahn-Teller-pairing and superconductivity in the cuprat es
• Phonon-enhanced relaxation and excitation in the Holstein-Hubbard model
• High Frequency Behavior of the Infrared Conductivity of Cuprates
• Gutzwiller description of non-magnetic Mott insulators: a dimer lattice model
• Charged particles on a 2D plane subject to anisotropic Jahn-Teller interactions
• C-axis lattice dynamics in Bi-based cuprate superconductors
• Nonequilibrium quantum dynamics of a charge carrier doped into a Mott insulator
• Inversion techniques for optical conductivity data
• Time-resolved dynamics of the superconducting two-gap state in MgB2 thin films
• Transverse optical Josephson plasmons, equations of motion
• Quasiparticle relaxation dynamics in spin-density-wave and superconducting SmFeAsO_{1-x}F_{x} single crystals
• Valence-Bond Dynamical Mean-Field Theory of Doped Mott Insulators with Nodal/Antinodal Differentiation
• Femtosecond core level photoemision spectroscopy on 1T-TaS2 using 60 eV laser source
• Optical conductivity of the infinite-dimensional Hubbard model
• Inequivalence of Single-Particle and Population Lifetimes in a Cuprate Superconductor
• Ultrafast quenching of electron-boson interaction and superconducting gap in a cuprate superconductor
• Effect of Crystal-Field Splitting and Inter-Band Hybridization on the Metal-Insulator Transitions of Strongly Correlated Systems
• Correlation Strength, Gaps and Particle-Hole Asymmetry in High-Tc Cuprates: a Dynamical Mean Field Study of the Three-Band Copper-Oxide Model
• Terahertz time-domain spectroscopic ellipsometry: Instrumentation and calibration
• First-Order Insulator-to-Metal Mott Transition in the Paramagnetic 3D System GaTa4Se8
• Field-induced polaron formation in the Holstein-Hubbard model
• Evidence for forward scattering and coupling to acoustic phonon modes in high-T${}_c$ cuprate superconductors
• Surface dead layer for quasiparticles near a Mott transition
• Role of impact ionization in the thermalization of photo-excited Mott insulators
• Optical control of non-equilibrium superconducting phase transition below Tc in a cuprate
• Effect of dynamical spectral weight redistribution on effective interactions in time-resolved spectroscopy
• Dimensional Crossover Driven by an Electric Field
• Real-time manifestation of strongly coupled spin and charge order parameters in stripe-ordered nickelates via time-resolved resonant x-ray diffraction
• Mechanisms of nonthermal destruction of the superconducting state and melting of the charge-density-wave state by femtosecond laser pulses
• Effects of energy dependence in the quasiparticle density of states on far-infrared absorption in the pseudogap state
• Quasiparticle Formation and Optical Sum Rule Violation in Cuprate Superconductors
• Optical response of highly excited particles in a strongly correlated system
• Observation of Competing Order in a High-$T_c$ Superconductor with Femtosecond Optical Pulses
• Ultrafast structural dynamics of the Fe-pnictide parent compound BaFe2As2
• Femtosecond x rays link melting of charge-density wave correlations and light-enhanced coherent transport in YBa2Cu3O6.6
• Electron-phonon coupling and charge gap in spin-density-wave iron-pnictides from quasiparticle relaxation dynamics
• Theory of the electron relaxation in metals excited by an ultrashort optical pump
• Hubbard exciton revealed by time-domain optical spectroscopy
• Femtosecond quasiparticle relaxation dynamics and probe polarization anisotropy in YBa2Cu4O8
• Doping dependence of femtosecond quasi-particle relaxation dynamics in Ba(Fe,Co)_2As_2 single crystals: possible evidence for normal state nematic fluctuations
• Time- and Momentum-resolved Gap Dynamics in Bi2Sr2CaCu2O8+delta
• Photoexcited electron dynamics in Kondo insulators and heavy fermions
• Bosonic Spectral Function and The Electron-Phonon Interaction in HTSC Cuprates
• Charge Recombination in Undoped Cuprates
• Gutzwiller theory of band magnetism in LaOFeAs
• Superconducting Fluctuations in the Normal State of the Two-Dimensional Hubbard Model
• Evidence of a photoinduced non-thermal superconducting-to-normal-state phase transition in overdoped Bi${}_2$Sr${}_2$Ca${}_{0.92}$Y${}_{0.08}$Cu${}_2$O${}_{8+\delta }$
• Pairing Glue in the Two Dimensional Hubbard Model
• Repulsion-to-attraction transition in correlated electron systems triggered by a monocycle pulse
• Evidence for a charge collective mode associated with superconductivity in copper oxides from neutron and x-ray scattering measurements of La${}_{2-x}$Sr${}_x$CuO${}_4$
• Dynamics of broken symmetry nodal and anti-nodal excitations in Bi_{2} Sr_{2} CaCu_{2} O_{8+δ} probed by polarized femtosecond spectroscopy
• Photo-enhanced antinodal conductivity in the pseudogap state of high Tc cuprates
• Distinct charge and spin gaps in underdoped YBa2Cu3O7-x
• Relevance of phonon dynamics in strongly correlated systems coupled to phonons: A Dynamical Mean Field Theory analysis
• Nonequilibrium steady states of the electric-field-driven Mott insulator: Thermalization, emergent Wannier-Stark ladder, and dielectric breakdown
• Competition between the Pseudogap and Superconducting States of Bi${}_2$Sr${}_2$Ca${}_{0.92}$Y${}_{0.08}$Cu${}_2$O${}_{8+\delta }$ Single Crystals Revealed by Ultrafast Broadband Optical Reflectivity
• Spin Dynamics in Cuprates: Optical Conductivity of HgBa2CuO4
• Mapping of the unoccupied states and relevant bosonic modes via the time dependent momentum distribution
• Ultrafast separation of photo-doped carriers in Mott antiferromagnets
• Electron-phonon coupling in 122 Fe pnictides analyzed by femtosecond time-resolved photoemission
• Nonequilibrium dynamical mean field simulation of inhomogeneous systems
• Nonequilibrium transport and optical properties of model metal--Mott-insulator--metal heterostructures
• Time-resolved photoemission of correlated electrons driven out of equilibrium
• Photoinduced melting of superconductivity in the high-Tc superconductor La2-xSrxCuO4 probed by time-resolved optical and THz techniques
• Linear Ramps of Interaction in the Fermionic Hubbard Model
• Polaron Crossover and Bipolaronic Metal-Insulator Transition in the Holstein model at half-filling
• Nonequilibrium "melting" of a charge density wave insulator via an ultrafast laser pulse
• Ultrafast carrier localisation in the pseudogap state of cuprate superconductors from coherent quench experiments
• Signatures of superconductivity and pseudogap formation in non-equilibrium nodal quasiparticles revealed by ultrafast angle-resolved photoemission
• Resonant generation of coherent phonons in a superconductor by ultrafast optical pump pulses
• Evidence for a Peierls phase-transition in a three-dimensional multiple charge-density waves solid
• Evidence for a universal length scale of dynamic charge inhomogeneity in cuprate superconductors
• Correlation tuned cross-over between thermal and nonthermal states following ultrafast transient pumping
• Solution of electric-field-driven tight-binding lattice in contact with fermion reservoir
• Coupling-dependent rates of energy transfers from photoexcited Mott insulators to lattice vibrations
• Dielectric Breakdown of a Mott Insulator
• Finite band inversion of ARPES in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ in comparison with optics
• Comparison of s- and d-wave gap symmetry in nonequilibrium superconductivity
• Temperature-dependent electron-phonon coupling in La${}_{2-x}$Sr${}_x$CuO${}_4$ probed by femtosecond X-ray diffraction
• Electron-phonon interaction in Strongly Correlated Systems
• Dissociation of a Hubbard--Holstein bipolaron driven away from equilibrium by a constant electric field
• Evolution of the dynamical pairing across the phase diagram of a strongly correlated high-temperature superconductor
• Mixed order parameter symmetries in cuprate superconductors
• Redistribution of phase fluctuations in a periodically driven cuprate superconductor
• Mott transition in Cr-doped V2O3 studied by ultrafast reflectivity: electron correlation effects on the transient response
• Dielectric breakdown in spin polarized Mott insulator
• Separating pairing from quantum phase coherence dynamics above the superconducting transition by femtosecond spectroscopy
• Electronic transport and dynamics in correlated heterostructures
• Coexistence of excited polarons and metastable delocalized states in photo-induced metals
• Doping-Dependent Raman Resonance in the Model High-Temperature Superconductor HgBa2CuO4+d
• A time and spatially resolved quench of the fermionic Hubbard model showing restricted equilibration
• High-temperature optical spectral weight and Fermi liquid renormalization in Bi-based cuprates
• Extracting the Temperature of Hot Carriers in Time- and Angle-Resolved Photoemission
• Photon number statistics uncover the fluctuations in non-equilibrium lattice dynamics
• Ultrafast dynamics of fluctuations in high-temperature superconductors far from equilibrium
• Non-equilibrium dynamics in the antiferromagnetic Hubbard model
• Tuning Hole Mobility, Concentration, and Repulsion in High-$T_c$ Cuprates via Apical Atoms
• Strongly correlated metal interfaces in the Gutzwiller approximation
• Self-organization of charged particles on a 2D lattice subject to anisotropic Jahn-Teller-type interaction and 3D Coulomb repulsion
• Finite-temperature Gutzwiller approximation and the phase diagram of a toy-model for V2O3
• Optical conductivity of doped Mott insulator: the interplay between correlation and electron-phonon interaction
• Unusual Two-stage Dynamics of the Spin-Lattice Polaron Formation
• Spatial Symmetry of Superconducting Gap in YBa2Cu3O7-δObtained from Femtosecond Spectroscopy
• Linear-Response Dynamics from the Time-Dependent Gutzwiller Approximation
• Evidence for crossover from a Bose-Einstein condensate to a BCS-like superconductor with doping in YBa2Cu3O(7-x) from quasiparticle relaxation dynamics experiments
• Disentangling thermal and non-thermal excited states in a charge-transfer insulator by time-and-frequency resolved pump-probe spectroscopy
• Nonequilibrium perturbation theory of the spinless Falicov-Kimball model
• On the possibility of fast vortices in the cuprates: A vortex plasma model analysis of THz conductivity and diamagnetism in La${}_{2-x}$Sr${}_x$CuO${}_4$
• Gutzwiller scheme for electrons and phonons: the half-filled Hubbard-Holstein model
• Electron-boson glue function derived from electronic Raman scattering
• Thermalization of field driven quantum systems
• The electron-boson spectral density function of underdoped Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ and YBa${}_2$Cu${}_3$O
• Energy dissipation in DC-field driven electron lattice coupled to fermion baths
• Optical sum rule anomalies in the cuprates: interplay between strong correlation and electronic bandstructures
• Optical and dc conductivities of cuprates: Spin-fluctuation scattering in the t-J model
• Lattice and surface effects in the out-of-equilibrium dynamics of the Hubbard model
• Relaxation dynamics of the Kondo lattice model
• Ultrafast spectroscopy of quasiparticle dynamics in cuprate superconductors
• Evidence of phonon mediated coupling between charge transfer and ligand field excitons in Sr${}_2$CuO${}_2$Cl${}_2$
• Time-Dependent Charge-Order and Spin-Order Recovery in Striped Systems
• Exact solution for Bloch oscillations of a simple charge-density-wave insulator
• Determination of boson spectrum from optical data in pseudogap phase of underdoped cuprates
• Extended Gutzwiller wavefunction for the Hubbard-Holstein model
• Signatures of electron-boson coupling in half-metallic ferromagnet Mn${}_5$Ge${}_3$: study of electron self-energy $\Sigma (\omega )$ obtained from infrared spectroscopy
• C-axis optical properties of high Tc cuprates
• Coherent topological defect dynamics and collective modes in superconductors and electronic crystals
• Self Energy and Fluctuation Spectra in Cuprates: Comparing Optical and Photoemission Results
• High energy fluctuation spectra in cuprates from infrared optical spectroscopy
• Diamagnetic susceptibility obtained from the six-vertex model and its implications for the high-temperature diamagnetic state of cuprate superconductors
• Quasiparticle relaxation dynamics in Hg-1223 studied by femtosecond time-resolved optical spectroscopy

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• Enhanced charge density wave coherence in a light-quenched, high-temperature superconductor
• Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
• High-order Harmonic Generation and its Unconventional Scaling Law in the Mott-insulating $\mathrm{C}{\mathrm{a}}_2\mathrm{Ru}{\mathrm{O}}_4$
• Ultrafast electron calorimetry uncovers a new long-lived metastable state in 1T-TaSe${}_2$ mediated by mode-selective electron-phonon coupling
• Third harmonic generation from collective modes in disordered superconductors
• Excitonic and lattice contributions to the charge density wave in 1T-TiSe${}_2$ revealed by a phonon bottleneck
• Experimental Determination of Momentum-Resolved Electron-Phonon Coupling
• Dynamical synchronization transition in interacting electron systems
• Collapse of superconductivity in cuprates via ultrafast quenching of phase coherence
• Non-equilibrium superconductivity in driven alkali-doped fullerides
• Nonlinear light-Higgs coupling in superconductors beyond BCS: Effects of the retarded phonon-mediated interaction
• Nonequilibrium steady states of electric-field driven Mott insulators
• Collective Modes in Excitonic Insulators: Effects of Electron-Phonon Coupling and Signatures in Optical Response
• Photoinduced multistage phase transitions in Ta2NiSe5
• Theory of coherent oscillations detection in THz pump-probe spectroscopy: from phonons to electronic collective modes
• A flow equation approach to periodically driven quantum systems
• Low rank compression in the numerical solution of the nonequilibrium Dyson equation
• Time-resolved observation of competing attractive and repulsive short-range correlations in strongly interacting Fermi gases
• Multi-band non-equilibrium GW+EDMFT formalism for correlated insulators
• Ultrafast melting and recovery of collective order in the excitonic insulator Ta${}_2$NiSe${}_5$
• Evidence for the weakly coupled electron mechanism in an Anderson-Blount polar metal
• All-optical nonequilibrium pathway to stabilizing magnetic Weyl semimetals in pyrochlore iridates
• Nonlinear optical effects in inversion-symmetry-breaking superconductors
• Optimized auxiliary representation of a non-Markovian environment by a Lindblad equation
• Charge-density-wave melting in the one-dimensional Holstein model
• Theory of photoinduced ultrafast switching to a spin-orbital ordered `hidden' phase
• Polarization dependence of the third-harmonic generation in multiband superconductors
• Nanoscale-femtosecond dielectric response of Mott insulators captured by two-colour near-field ultrafast electron microscopy
• Low-energy electrodynamics of infinite-layer nickelates: evidence for d-wave superconductivity in the dirty limit
• Light-Enhanced Spin Fluctuations and d-Wave Superconductivity at a Phase Boundary
• Effective Floquet Hamiltonians for periodically-driven twisted bilayer graphene
• Investigating ultrafast quantum magnetism with machine learning
• Non-equilibrium phenomena in superconductors probed by femtosecond time-domain spectroscopy
• Nonequilibrium GW+EDMFT: Antiscreening and inverted populations from nonlocal correlations
• Density-wave-like gap evolution in La${}_3$Ni${}_2$O${}_7$ under high pressure revealed by ultrafast optical spectroscopy
• Theory of driven Higgs oscillations and third-harmonic generation in unconventional superconductors
• Hybridization dynamics in CeCoIn5 revealed by ultrafast optical spectroscopy
• Enhanced ultrafast relaxation rate in the Weyl semimetal phase of $\mathbf{MoT}{\mathbf{e}}_2$ measured by time-and angle-resolved photoelectron spectroscopy
• Finite-temperature density-matrix renormalization group method for electron-phonon systems: Thermodynamics and Holstein-polaron spectral functions
• Gutzwiller Hybrid Quantum-Classical Computing Approach for Correlated Materials
• Light-cone and diffusive propagation of correlations in a many-body dissipative system
• Exploring nonequilibrium phases of photo-doped Mott insulators with Generalized Gibbs ensembles
• Exploring Quantum Materials with Resonant Inelastic X-Ray Scattering
• Dynamics of correlation-frozen antinodal quasiparticles in superconducting cuprates
• Non-equilibrium Pair Breaking in Ba(Fe1-xCox)2As2 Superconductors: Evidence for Formation of Photo-Induced Excitonic Spin-Density-Wave State
• Emergent ultrafast phenomena in correlated oxides and heterostructures
• Dynamics of photo-doped charge transfer insulators
• Quasiclassical Theory on Third-Harmonic Generation in Conventional Superconductors with Paramagnetic Impurities
• Near-infrared light-induced superconducting-like state in underdoped YBa${}_2$Cu${}_3$O${}_y$ studied by $c$-axis terahertz third-harmonic generation
• Novel spin-orbit coupling driven emergent states in iridate-based heterostructures
• Coherent phonons and the interplay between charge density wave and Mott phases in 1$T$-TaSe${}_2$
• Transient Floquet engineering of superconductivity
• Non-linear charge oscillation driven by a single-cycle light-field in an organic superconductor
• Hybridization-switching induced Mott transition in ABO${}_3$ perovskites
• Nonequilibrium steady-state theory of photodoped Mott insulators
• Ultrafast Optical Spectroscopy Evidence of Pseudogap and Electron-Phonon Coupling in an Iron-Based Superconductor KCa${}_2$Fe${}_4$As${}_4$F${}_2$
• Charge Density Wave order and electron-phonon coupling in ternary superconductor Bi${}_2$Rh${}_3$Se${}_2$
• Origin of the density wave instability in trilayer nickelate La${}_4$Ni${}_3$O${}_{10}$ revealed by optical and ultrafast spectroscopy
• Localised vibrations in superconducting YBCO revealed by ultra-fast optical coherent spectroscopy
• Electron-Phonon-Driven Three-Dimensional Metallicity in an Insulating Cuprate
• Non-equilibrium Optical Conductivity: General Theory and Application to Transient Phases
• Photo-induced nonequilibrium states in Mott insulators
• All-optical seeding of a light-induced phase transition with correlated disorder
• Dynamical mean-field study of a photon-mediated ferroelectric phase transition
• Coupled charge and spin dynamics in a photo-excited Mott insulator
• A quantum Boltzmann equation for strongly correlated electrons
• Measurement of 10 fs pulses across the entire Visible to Near-Infrared Spectral Range
• Disentangling lattice and electronic instabilities in the excitonic insulator candidate Ta${}_2$NiSe${}_5$ by nonequilibrium spectroscopy
• Ultrafast hot carrier dynamics of ZrTe${}_5$ from time-resolved optical reflectivity
• Extracting spinon self-energies from two-dimensional coherent spectroscopy
• Emergence of pseudogap from short-range spin-correlations in electron doped cuprates
• Memory truncated Kadanoff-Baym equations
• Advancing time- and angle-resolved photoemission spectroscopy: The role of ultrafast laser development
• Current-enabled optical conductivity of superconductors
• Thermal boundary resistance from transient nanocalorimetry: a multiscale modeling approach
• Establishing non-thermal regimes in pump-probe electron-relaxation dynamics
• Bypassing the energy-time uncertainty in time-resolved photoemission
• Signatures of enhanced superconducting phase coherence through MID-IR excitation in optimally doped Y-Bi2212
• Spin, charge and $\eta$-spin separation in one-dimensional photo-doped Mott insulators
• Light-induced nonequilibrium response of the superconducting cuprate La${}_{2-x}$Sr${}_x$CuO${}_4$
• Simulation of time-dependent resonant inelastic X-ray scattering using non-equilibrium dynamical mean-field theory
• Pump Probe Spectroscopy of Bose Polarons: Dynamical Formation and Coherence
• Time-resolved ARPES on cuprates: Tracking the low-energy electrodynamics in the time domain
• Real-time non-adiabatic dynamics in the one-dimensional Holstein model: Trajectory-based vs exact methods
• Characterization of photoinduced normal state through charge density wave in superconducting YBa${}_2$Cu${}_3$O${}_{6.67}$
• Ultrafast dynamics in the presence of antiferromagnetic correlations in electron-doped cuprate La${}_{2-x}$Ce${}_x$CuO${}_{4\pm \delta }$
• THz non-linear optical response in cuprates: predominance of the BCS response over the Higgs mode
• Impact of damping on superconducting gap oscillations induced by intense Terahertz pulses
• Unconventional slowing down of electronic recovery in photoexcited charge-ordered La${}_{1/3}$Sr${}_{2/3}$FeO${}_3$
• Biexciton in one-dimensional Mott insulators
• Towards a Quantum Fluid Theory of Correlated Many-Fermion Systems from First Principles
• Thermal dynamics and electronic temperature waves in layered correlated materials
• Noise Correlations in time- and angular-resolved photoemission spectroscopy
• Transient Higgs oscillations and high-order nonlinear light-Higgs coupling in terahertz-wave drivenNbN superconductor
• Detecting a preformed pair phase: The response to a pairing forcing field
• Ultrafast generation and decay of a surface metal
• Holography and thermalization in optical pump-probe spectroscopy
• Doublon bottleneck in the ultrafast relaxation dynamics of hot electrons in 1T-TaS_2
• Unveiling the Hybridization Process in a Quantum Critical Ferromagnet by Ultrafast Optical Spectroscopy
• Investigation of the Non-equilibrium State of Strongly Correlated Materials by Complementary Ultrafast Spectroscopy Techniques
• Selective cooling by impulse perturbations in a simple toy model
• Enhanced optical conductivity and many-body effects in strongly-driven photo-excited semi-metallic graphite
• Vibrational coherent control of localized d-d electronic excitation
• Decoupled few-femtosecond phase transitions in vanadium dioxide
• Analogue of Hamilton-Jacobi theory for the time-evolution operator
• Disorder-sensitive pump-probe measurements on Nd${}_{1.83}$Ce${}_{0.17}$CuO${}_{4\pm \delta }$ films
• Non-equilibrium correlation dynamics in the one-dimensional Fermi-Hubbard model: A testbed for the two-particle reduced density matrix theory
• A photo-induced strange metal with electron and hole quasi-particles
• Photoinduced $\eta$ pairing in the Kondo lattice model
• Fluctuation control of non-thermal orbital order
• Consequences of integrability breaking in quench dynamics of pairing Hamiltonians
• Nonequilibrium Electron Dynamics In Pump-Probe Spectroscopy: Role Of Excited Phonon Populations
• Ultrafast charge carrier and exciton dynamics in an excitonic insulator probed by time-resolved photoemission spectroscopy
• Nonequilibrium diagrammatic many-body simulations with quantics tensor trains
• Persistent coherence of quantum superpositions in an optimally doped cuprate revealed by 2D spectroscopy
• Role of matrix elements in the time-resolved photoemission signal
• Collapse of density wave and emergence of superconductivity in pressurized-La${}_4$Ni${}_3$O${}_{10}$ evidenced by ultrafast spectroscopy
• Transient terahertz photoconductivity of insulating cuprates
• Ultrafast transient interference in pump-probe spectroscopy of band and Mott insulators
• Strong light-field effects driven by nearly single-cycle 7-fs light field in correlated organic conductors
• Clocking the Onset of Bilayer Coherence in a High-${\mathrm{T}}_{\mathrm{C}}$ Cuprate
• Tracking local magnetic dynamics via high-energy charge excitations in a relativistic Mott insulator
• Mott materials: unsuccessful metals with a bright future
• Exceptional points in Fermi liquids with quadrupolar interactions
• Controlling competing orders via non-equilibrium acoustic phonons: emergence of anisotropic electronic temperature
• Stroboscopic Tests for Thermalization of Electrons in Pump/Probe Experiments
• Ultrafast loss of lattice coherence in the light-induced structural phase transition of V${}_2$O${}_3$
• Non-thermal superconductivity in photo-doped multi-orbital Hubbard systems
• Spectrally resolving the phase and amplitude of coherent phonons in the charge density wave state of 1$T$-TaSe${}_2$
• Ultrafast Chirality-dependent Dynamics from Helicity-resolved Transient Absorption Spectroscopy
• Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal
• Antiphase Oscillations in the Time-Resolved Spin Structure Factor of a Photoexcited Mott Insulator
• Time-dependent spectral properties of photoexcited one-dimensional ionic Hubbard model: an exact diagonalization study
• Superconductivity and charge density wave under a time-dependent periodic field in the one-dimensional attractive Hubbard model
• Adaptive Time Stepping for the Two-Time Integro-Differential Kadanoff-Baym Equations
• Double-Exchange Enhanced Magnetic Blue-Shift of Mott Gaps
• Probing the fluctuations of the optical properties in time-resolved spectroscopy
• Light-induced magnetization driven by interorbital charge motion in a spin-orbit assisted Mott insulator alpha-RuCl3
• Many-body recombination in insulating cuprates
• Pattern Formation by Electric-field Quench in Mott Crystal
• Lattice modulation spectroscopy of one-dimensional quantum gases:Universal scaling of the absorbed energy
• Dynamically enhanced unconventional superconducting correlations in a Hubbard ladder
• Time-dependent ghost-Gutzwiller non-equilibrium dynamics
• Nonequilibrium phononic first-order phase transition in a driven fermion chain
• Photo-induced charge-transfer renormalization in NiO
• A Microscopic Description of Displacive Coherent Phonons
• Photo-induced new metastable state with modulated Josephson coupling strengths in Pr${}_{0.88}$LaCe${}_{0.12}$CuO${}_4$
• Visible pump -- mid infrared pump -- broadband probe: development and characterization of a three-pulse setup for single-shot ultrafast spectroscopy at 50 kHz
• Ultrafast molecular dynamics in terahertz-STM experiments: Theoretical analysis using Anderson-Holstein model
• Third-harmonic generation in excitonic insulators
• Polarization-resolved broadband time-resolved optical spectroscopy for complex materials: application to the case of MoTe${}_2$ polytypes
• Non-equilibrium scalar field dynamics starting from Fock states: Absence of thermalization in one dimensional phonons coupled to fermions
• Controllable Finite-Momenta Dynamical Quasicondensation in the Periodically Driven One-Dimensional Fermi-Hubbard Model
• Impact ionization and multiple photon absorptions in the two-dimensional photoexcited Hubbard model
• Nature of the current-induced insulator-to-metal transition in Ca${}_2$RuO${}_4$ as revealed by transport-ARPES
• Bosonic excitations and electron pairing in an electron-doped cuprate superconductor
• THz Photodetector using sideband-modulated transport through surface states of a 3D Topological Insulator
• Interplay of charge and spin dynamics after an interaction quench in the Hubbard model
• Decay and revival of a transient trapped Fermi condensate
• Revealing Hund's multiplets in Mott insulators under strong electric fields
• Time-domain study of coupled collective excitations in quantum materials
• Local interpretation of time-resolved X-ray absorption in Mott insulators: Insights from nonequilibrium dynamical mean-field theory
• Charge and pairing dynamics in the attractive Hubbard model: mode coupling and the validity of linear-response theory
• Ultrafast control of spin-orbital separation probed with time-resolved RIXS
• Magnus expansion approach to parametric oscillator systems in a thermal bath
• Steady off-diagonal long-range order state in a half-filled dimerized Hubbard chain induced by a resonant pulsed field
• Laser-induced coherent control of an electronic nematic quantum phase transition
• Efficiency of fermionic quantum distillation
• Chirped amplitude mode in photo-excited superconductors
• Detection of squeezed phonons in pump-probe spectroscopy
• Memory-Efficient Nonequilibrium Green's Function Framework Built On Quantics Tensor Trains
• Surface resistance and amplitude mode under uniform and static external field in conventional superconductors
• Anisotropic Time-Domain Electronic Response in Cuprates
• Floquet Engineering of Lie Algebraic Quantum Systems
• Optical manipulation of bipolarons in a system with nonlinear electron-phonon coupling
• Quantum Liouville's theorem based on Haar measure
• Site-selective doublon-holon dynamics in a pumped one-dimensional Hubbard superlattice with staggered Coulomb interactions
• Photoexcitations in the Hubbard model -- generalized Loschmidt amplitude analysis of impact ionization in small clusters
• Interpreting pulse-shape effects in pump-probe spectroscopies
• Charge Oscillations Emerging after Application of an Intense Light Field to Superconductors on a Dimer Lattice
• Ubiquitous suppression of the nodal coherent spectral weight in Bi-based cuprates
• Light-Induced Melting of Competing Stripe Orders without Introducing Superconductivity in La${}_{2-\mathbf{x}}$Ba${}_{\mathbf{x}}$CuO${}_4$
• Multidimensional coherent spectroscopy of correlated lattice systems
• Holographic pump probe spectroscopy
• Ultrafast dynamics in the Lifshitz-type 5$d$ pyrochlore antiferromagnet Cd${}_2$Os${}_2$O${}_7$
• Photoinduced $\eta$-pairing correlation in the Hubbard ladder
• Nature of superconducting fluctuation in photo-excited systems
• Rabi-resonant behavior of periodically-driven correlated fermion systems
• Efficient Control of High Harmonic Generation in Carbon Nanotubes using the Aharonov-Bohm Effect
• Probing Fermi liquid exceptional points through AC conductivity
• Light-induced hidden odd-frequency order in a model for A${}_3$C${}_{60}$
• Next-generation EDIpack: A Lanczos-based package for quantum impurity models featuring general broken-symmetry phases, flexible bath topologies and multi-platform interoperability
• Study of pseudogap and superconducting quasiparticle dynamics in $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$ by time-resolved optical reflectivity
• Photo-excited states in correlated band insulators
• Evidence of structural evolution in Sr2RhO4 studied by time-resolved optical reflectivity spectroscopy
• Orbitally Selective Resonant Photodoping to Enhance Superconductivity
• The perils of minimal coupling to electromagnetic field in quantum many-body systems
• Photoinduced High-Frequency Charge Oscillations in Dimerized Systems
• Correlations generated from high-temperature states: nonequilibrium dynamics in the Fermi-Hubbard model
• Slow interaction quench in BCS superconductors: emergence of pre-formed pairs
• Ultra-fast electric field controlled spin-fluctuations in the Hubbard model
• Ultrafast dynamics in (TaSe${}_4$)${}_2$I triggered by valence and core-level excitation
• Light-induced phase transitions in vanadium dioxide: a tensor network study
• Metastability in Coexisting Competing Orders
• Creation of a novel inverted charge density wave state
• Dynamics of non-thermal states in optimally-doped $B{i}_{2}S{r}_{2}C{a}_{0.92}{Y}_{0.08}C{u}_2{O}_{8+\delta }$ revealed by mid-infrared three-pulse spectroscopy
• Electron-magnon dynamics triggered by an ultrashort laser pulse: A real-time Dual $GW$ study
• Ultrafast orbital manipulation and Mott physics in multi-band correlated materials
• Ultrafast excitation and topological soliton formation in incommensurate charge density wave states
• One-dimensional extended Hubbard model coupled with an optical cavity
• Ultrafast X-ray Absorption Spectroscopy of Strongly Correlated Systems: Core Hole Effect
• Measuring the ultrafast screening of $U$ in photo-excited charge-transfer insulators with time-resolved X-ray absorption spectroscopy
• Photo-induced Dynamics of Quasicrystalline Excitonic Insulator
• Resonant laser excitation and time-domain imaging of chiral topological polariton edge states
• Nonequilibrium topological spin textures in momentum space
• Nonequilibrium DMFT approach to time-resolved Raman spectroscopy
• Nonequilibrium control of kagome metals
• Anomalous amplitude mode dynamics below the expected charge-density-wave transition in 1$T$-VSe${}_2$
• Nonthermal order by disorder
• Momentum-dependent relaxation dynamics of the doped repulsive Hubbard model
• High-resolution MHz time- and angle-resolved photoemission spectroscopy based on a tunable vacuum ultraviolet source
• Competition between Interactions and Randomness in Photoinduced Synchronization of Charge Oscillations on a Dimer Lattice
• Precise dd excitations and commensurate intersite Coulomb interactions in the dissimilar cuprate YBa_2Cu_3O_(7-x) and La_(2-x)Sr_xCuO_4
• Floquet engineering of effective pairing interactions in a doped band insulator
• Mechanism for Synchronization of Charge Oscillations in Dimer Lattices
• Charge creation via quantum tunneling in one-dimensional Mott insulators: A numerical study of the extended Hubbard model
• Simulating Electron Transfer on Noisy Quantum Computers
• Photoinduced Pseudospin Polarization in a Three-Orbital Hubbard Model
• Low-frequency interlayer phonon dynamics and photoinduced terahertz absorption in black phosphorus
• Dynamical control in a prethermalized molecular ultracold plasma: Local dissipation drives global relaxation
• Field induced conducting state in Mott insulator
• Phonon-induced disorder in dynamics of optically pumped metals from non-linear electron-phonon coupling
• Orbital-selective time-domain signature of nematicity dynamics in the charge-density-wave phase of La${}_{1.65}$Eu${}_{0.2}$Sr${}_{0.15}$CuO${}_4$
• Tuning magnetic interactions with nonequilibrium optical phonon populations: a theoretical study
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy
• Energy flow during relaxation in an electron-phonon system with multiple modes: A nonequilibrium Green's function study
• Time reversal symmetry protected chaotic fixed point in the quench dynamics of a topological $p$-wave superfluid
• Signatures of Bardasis-Schrieffer mode excitation in Third-Harmonic generated currents
• Energy density driven ultrafast electronic excitations in a cuprate superconductor
• Radiative Higgs mode in photoinduced $\eta$ pairs
• Transient selection of competing order in frustrated spin Peierls systems after a quench
• Chirped pulse control over the melting of superconductors
• Dissipative cooling induced by pulse perturbations
• Tracking the surface atomic motion in a coherent phonon oscillation
• Nonequilibrium spectral moment sum rules of the Holstein-Hubbard model
• Collective Magnetic Excitations in a Photo-excited Electron-doped Cuprate Superconductor
• Charge carrier relaxation dynamics in the one-dimensional Kondo lattice model
• Capturing reduced-order quantum many-body dynamics out of equilibrium via neural ordinary differential equations
• Tracking the local order parameter through the Hubbard exciton decoherence time in the Mott-Hubbard insulator LaVO3
• Two-dimensional THz spectroscopy in electronic systems: a many-body diagrammatic approach
• Nonequilibrium Dynamics in a Quantum Spin Chain with Pump-Probe Resonant Inelastic X-ray Scattering
• Ultrafast Raman probe of the photoinduced superconducting to normal state transition in the cuprate Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Ultrafast charge-transfer dynamics in Ca${}_2$CuO${}_2$Cl${}_2$ from time-resolved optical reflectivity
• Floquet spin textures in optically pumped non-Hermitian surface states
• Ultrafast Electronic Structure Engineering in 1$T$-TaS${}_2$: Role of Doping and Amplitude Mode Dynamics
• Intertwined geometries in collective modes of two dimensional Dirac fermions
• Nonequilibrium hysteretic phase transitions in periodically light-driven superconductors
• Distinct amplitude mode dynamics upon resonant and off-resonant excitation across the charge density wave energy gap in LaTe3 investigated by time- and angle-resolved photoemission spectroscopy
• Dynamical correlations and nonequilibrium sum rules in photodoped Hubbard ladders
• Properties and challenges of hot-phonon physics in metals: MgB${}_2$ and other compounds
• Algorithm for computing perturbation series of dynamical mean field theory
• Radio-frequency driving of an attractive Fermi gas in a one-dimensional optical lattice
• Many-body Keldysh Crossover in the DC-driven Haldane Spin Chain