Exploring nonequilibrium phases of photo-doped Mott insulators with generalized Gibbs ensembles
Year: 2022
Type: article
Abstract: Many experiments show that strong excitations of correlated quantum materials can cause non-thermal phases without equilibrium analogues. Understanding the origin and properties of these nonequilibrium states has been challenging due to the limitations of theoretical methods for nonequilibrium strongly correlated systems. In this work, we introduce a generalized Gibbs ensemble description that enables a systematic analysis of the long-time behavior of photo-doped states in Mott insulators based on equilibrium methods. We demonstrate the power of the method by mapping out the nonequilibrium phase diagram of the one-dimensional extended Hubbard model, which features η-pairing and charge density wave phases in a wide photo-doping range. We furthermore clarify that the peculiar kinematics of photo-doped carriers, and the interaction between them, play an essential role in the formation of these non-thermal phases. Our results establish a new path for the systematic analysis of nonequilibrium strongly correlated systems.
Source: Communications Physics
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,490
Funders: U.S. Department of Energy, Simons Foundation, Flatiron Health, Javna Agencija za Raziskovalno Dejavnost RS, Université de Fribourg, Office of Science, Japan Society for the Promotion of Science, Basic Energy Sciences, Core Research for Evolutional Science and Technology, H2020 European Research Council
Awards: G1350216994, PROGRAMMABLE QUANTUM MATERIALS (PRO-QM), Establishment of strong light field photoscience in solids and application to materials science, Theoretical study of photo control of excitonic insulators and high-harmonic generation using realistic models, Theoretical study of nonequilibrium steady states in strongly correlated systems and ordered phases, G3301711307, PROGRAMMABLE QUANTUM MATERIALS (PRO-QM), Search for novel states in disordered systems induced by external field driving, Nonequilibrium dynamical mean-field theory: From models to materials, G5443989450, G560550800, G6718509927, G8653021945, Multi-scale modeling of non-equilibrium quantum materials, Solid state theory and statistical physics
OpenAlex ID: W4205585729