821 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universität HamburgDE514 papers
- Max Planck Institute for the Structure and Dynamics of MatterDE203 papers
- Center for Free-Electron Laser ScienceDE131 papers
- Deutsches Elektronen-Synchrotron DESYDE122 papers
- University of OxfordGB28 papers
- Centre National de la Recherche ScientifiqueFR24 papers
- European X-Ray Free-Electron LaserDE24 papers
- Aarhus UniversityDK21 papers
- National and Kapodistrian University of AthensGR21 papers
- SLAC National Accelerator LaboratoryUS17 papers
- University of WürzburgDE15 papers
- University of Massachusetts AmherstUS13 papers
50 papers · 1 filter
Universal Topological Power Transfer with Arbitrarily Large Chern Number in Driven Quantum Spin Chains
Anshuman Tripathi, Mircea Trif, Thore Posske
Topological frequency converters exploit a quantized transfer of power between two driving fields in a quantum system, a phenomenon topologically protected by the Chern number of t…
The toric code under antiferromagnetic isotropic Heisenberg interactions
Won Jang, Robert Peters, Thore Posske
We investigate the impact of an isotropic antiferromagnetic Heisenberg perturbation on the toric code, focusing on the resulting quantum phase transition and the nature of the phas…
Interplay between many-body correlations, strain and lattice relaxation in twisted bilayer graphene
Lorenzo Crippa, Gautam Rai, Dumitru Călugăru +6
In twisted bilayer graphene, a unified understanding of the mechanisms governing temperature-dependent electronic spectra and thermodynamic properties remains controversial despite…
Magnetization of electronic ground states in frustrated superstable graphs
F. P. M. Méndez-Córdoba, J. Tindall, D. Jaksch +1
Geometric frustration lies at the heart of many unconventional quantum phases in strongly interacting electron systems. Here, we analytically determine the ground state magnetizati…
Site-polarized Mott phases competing with a correlated metal in twisted WSe
Siheon Ryee, Lennart Klebl, Gautam Rai +9
Twisted WSe hosts superconductivity, metal-insulator phase transitions, and field-controllable Fermi-liquid to non-Fermi-liquid transport properties. In this work, we use dynam…
Ultrafast Electronic Structure Engineering in 1-TaS: Role of Doping and Amplitude Mode Dynamics
J. Jayabalan, Jiyu Chen, Laura Pätzold +12
In strongly correlated transition metal dichalcogenides, an intricate interplay of polaronic distortions, stacking arrangement, and electronic correlations determines the nature of…
Electron-magnon dynamics triggered by an ultrashort laser pulse: A real-time Dual study
Nagamalleswararao Dasari, Hugo U. R. Strand, Martin Eckstein +2
Ultrafast irradiation of correlated electronic systems triggers complex dynamics involving quasi-particle excitations, doublons, charge carriers, and spin fluctuations. To describe…
Real-Space Switching of Local Moments Driven by Quantum Geometry in Correlated Graphene Heterostructures
Niklas Witt, Siheon Ryee, Lennart Klebl +3
Graphene-based multilayer systems serve as versatile platforms for exploring the interplay between electron correlation and topology, thanks to distinctive low-energy bands marked…
Role of phonon coupling in driving photo-excited Mott insulators towards a transient superconducting steady state
Sujay Ray, Martin Eckstein, Philipp Werner
Understanding light-induced hidden orders is relevant for nonequilibrium materials control and future ultrafast technologies. Hidden superconducting order, in particular, has been…
Electronic correlations in epitaxial graphene: Mott states proximitized to a relativistic electron gas
Chitran Ghosal, Siheon Ryee, Zamin Mamiyev +3
Graphene, renowned for its exceptional electronic and optical properties as a robust 2D material, traditionally lacks electronic correlation effects. Proximity coupling offers a pr…
Theory of intervalley-coherent AFM order and topological superconductivity in tWSe
Ammon Fischer, Lennart Klebl, Valentin Crépel +7
The recent observation of superconductivity in the vicinity of Fermi surface reconstructed insulating or metallic states has established twisted bilayers of WSe\textsubscript{2} as…
Nonthermal order by disorder
Francesco Grandi, Antonio Picano, Ronny Thomale +2
The quench dynamics of systems exhibiting cooperative or almost competitive orders in equilibrium are explored using Ginzburg-Landau theory plus fluctuations. We show that when the…
Measuring the ultrafast screening of in photo-excited charge-transfer insulators with time-resolved X-ray absorption spectroscopy
Denis Golez, Eva Paprotzki, Philipp Werner +1
Recent seminal experiments have utilized time-resolved X-ray absorption spectroscopy (XAS) to investigate the ultrafast photo-induced renormalization of the electron interaction ('…
Generalized Josephson effect with arbitrary periodicity in quantum magnets
Anshuman Tripathi, Felix Gerken, Peter Schmitteckert +3
Easy-plane quantum magnets are strikingly similar to superconductors, allowing for spin supercurrent and an effective superconducting phase stemming from their rotation symm…
Kondo Screening and Indirect Magnetic Exchange through a Conventional Superconductor Studied by the Density-Matrix Renormalization Group
Cassian Plorin, Michael Potthoff
The competition between the Kondo screening and indirect magnetic exchange in systems with two magnetic impurities coupled to a conventional s-wave superconductor gives rise to a n…
The Heisenberg-RIXS instrument at the European XFEL
Justine Schlappa, Giacomo Ghiringhelli, Benjamin E. Van Kuiken +44
Resonant Inelastic X-ray Scattering (RIXS) is an ideal X-ray spectroscopy method to push the combination of energy and time resolutions to the Fourier transform ultimate limit, bec…
Charge Density Wave Ordering in NdNiO: Effects of Multiorbital Nonlocal Correlations
Evgeny A. Stepanov, Matteo Vandelli, Alexander I. Lichtenstein +1
In this work, we investigate collective electronic fluctuations and, in particular, the possibility of the charge density wave ordering in an infinite-layer NdNiO. We perform a…
Downfolding from Ab Initio to Interacting Model Hamiltonians: Comprehensive Analysis and Benchmarking of the DFT+cRPA Approach
Yueqing Chang, Erik G. C. P. van Loon, Brandon Eskridge +8
Model Hamiltonians are regularly derived from first-principles data to describe correlated matter. However, the standard methods for this contain a number of largely unexplored app…
All product eigenstates in Heisenberg models from a graphical construction
Felix Gerken, Ingo Runkel, Christoph Schweigert +1
Recently, large degeneracy based on product eigenstates has been found in spin ladders, kagome-like lattices, and motif magnetism, connected to spin liquids, anyonic phases, and qu…
Bypassing the lattice BCS-BEC crossover in strongly correlated superconductors: resilient coherence from multiorbital physics
Niklas Witt, Yusuke Nomura, Sergey Brener +3
Superconductivity emerges from the spatial coherence of a macroscopic condensate of Cooper pairs. Increasingly strong binding and localization of electrons into these pairs comprom…
Dynamical correlations and order in magic-angle twisted bilayer graphene
Gautam Rai, Lorenzo Crippa, Dumitru Călugăru +8
In magic angle twisted bilayer graphene, transport, thermodynamic and spectroscopic experiments pinpoint at a competition between distinct low-energy states with and without electr…
Geometrical torque on magnetic moments coupled to a correlated antiferromagnet
Nicolas Lenzing, David Krüger, Michael Potthoff
The geometrical spin torque mediates an indirect interaction of magnetic moments, which are weakly exchange coupled to a system of itinerant electrons. It originates from a finite…
The quantum skyrmion Hall effect in f electron systems
Robert Peters, Jannis Neuhaus-Steinmetz, Thore Posske
The flow of electric current through a two-dimensional material in a magnetic field gives rise to the family of Hall effects. The quantum versions of these effects accommodate robu…
Perturbative solution of fermionic sign problem in lattice Quantum Monte Carlo
Sergei Iskakov, Mikhail I. Katsnelson, Alexander I. Lichtenstein
We develop a strong-coupling perturbation scheme for a generic Hubbard model around a half-filled particle-hole-symmetric reference system, which is free from the fermionic sign pr…