Deconstructing the Hubbard Hamiltonian by Ultrafast Quantum Modulation Spectroscopy in Solid-state Mott Insulators

Abstract

Most available theories for correlated electron transport are based on the Hubbard Hamiltonian. In this effective theory, renormalized hopping and interaction parameters only implicitly incorporate the coupling of correlated charge carriers to microscopic degrees of freedom. Unfortunately, no spectroscopy can individually probe such renormalizations, limiting the applicability of Hubbard models. We show here that the role of each individual degree of freedom can be made explicit by using a new experimental technique, which we term 'quantum modulation spectroscopy' and we demonstrate here in the one-dimensional Mott insulator ET-F2TCNQ. We explore the role on the charge hopping of two localized molecular modes, which we drive with a mid infrared optical pulse. Sidebands appear in the modulated optical spectrum, and their linshape is fitted with a model based on the dynamic Hubbard Hamiltonian. A striking asymmetry between the renormalization of doublons and holons is revealed. The concept of quantum modulation spectroscopy can be used to systematically deconstruct Hubbard Hamiltonians in many materials, exposing the role of any mode, electronic or magnetic, that can be driven to large amplitude with a light field.

arXiv comment20 pages, 5 figures

References in corpus (13)

• Many-Body Physics with Ultracold Gases
• Short-range quantum magnetism of ultracold fermions in an optical lattice
• Controlling Correlated Tunneling and Superexchange Interactions with AC-Driven Optical Lattices
• Artificial graphene with tunable interactions
• Quantum interference between charge excitation paths in a solid state Mott insulator
• Ultrafast strain engineering in complex oxide heterostructures
• Mott Transition in Degenerate Hubbard Models: Application to Doped Fullerenes
• Excitons in one-dimensional Mott insulators
• Polaronic conductivity in the photoinduced phase of 1T-TaS2
• Pressure dependent relaxation in the photo-excited Mott insulator ETF2TCNQ: Influence of hopping and correlations on quasiparticle recombination rates
• Dynamic Hubbard Model
• Intrinsic Photoconductivity of Ultracold Fermions in Optical Lattices
• Spectral Weight Transfer in Multi-Orbital Mott Systems

Cited by in corpus (32)

• An optically stimulated superconducting-like phase in K3C60 far above equilibrium Tc
• Nonthermal pathways to ultrafast control in quantum materials
• Nonlinear light-matter interaction at terahertz frequencies
• Phonon driven Floquet matter
• Pressure tuning of light-induced superconductivity in K3C60
• Photo-molecular high temperature superconductivity
• Mode-selective vibrational control of charge transport in $\pi$-conjugated molecular materials
• THz-Frequency Modulation of the Hubbard U in an Organic Mott Insulator
• Optical freezing of charge motion in an organic conductor
• Enhancement of super-exchange pairing in the periodically-driven Hubbard model
• Non-equilibrium superconductivity in driven alkali-doped fullerides
• Field-induced polaron formation in the Holstein-Hubbard model
• The Anderson--Holstein Model in Two Flavors of the Non--Crossing Approximation
• Ultrafast renormalization of the onsite Coulomb repulsion in a cuprate superconductor
• Ultrafast coupled charge and spin dynamics in strongly correlated NiO
• Coexistence of excited polarons and metastable delocalized states in photo-induced metals
• Possible light-induced superconductivity in a strongly correlated electron system
• Photo-induced nonequilibrium states in Mott insulators
• Exciton Recombination in One-Dimensional Organic Mott Insulators
• Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC
• Ultrafast Mott transition driven by nonlinear electron-phonon interaction
• Effective doublon and hole temperatures in the photo-doped dynamic Hubbard model
• Ground state phase diagram of the one-dimensional $t$-$J$ model with pair hopping terms
• Fluctuation control of non-thermal orbital order
• Cavity engineering of Hubbard $U$ via phonon polaritons
• Optical suppression of electron motion in low-dimensional correlated electron system
• Controllable Finite-Momenta Dynamical Quasicondensation in the Periodically Driven One-Dimensional Fermi-Hubbard Model
• Optical manipulation of bipolarons in a system with nonlinear electron-phonon coupling
• Field-assisted doublon manipulation in the Hubbard model. A quantum doublon ratchet
• Ultrafast dynamics of a fermion chain in a terahertz field-driven optical cavity
• Photoinduced Frustration Modulation in $\kappa$-type Quantum Spin Liquid Candidates
• Uncovering the nature of transient and metastable non-equilibrium phases in 1$T$-TaS${}_2$