2009/03/31 by Naoto Tsuji, Takashi Oka, Hideo Aoki
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic physics #Chemistry #Condensed matter physics #Dissipation #Drude model #Electron #Excitation #Floquet theory #Non-equilibrium thermodynamics #Nonlinear system #Physics #Physics of Superconductivity and Magnetism #Population inversion #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Steady state (chemistry) #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.103.047403
published as Phys. Rev. Lett. 103, 047403 (2009) · 5 pages, 3 figures, published version
openalex publication_date 2009/07/24 · arxiv created 2009/08/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a framework to determine nonequilibrium steady states in strongly correlated electron systems in the presence of dissipation. This is demonstrated for a correlated electron (Falicov-Kimball) model attached to a heat bath and irradiated by an intense pump light, for which an exact solution is obtained with the Floquet method combined with the nonequilibrium dynamical mean-field theory. On top of a Drude-like peak indicative of photometallization as observed in recent pump-probe experiments, new nonequilibrium phenomena are predicted to emerge, where the optical conductivity exhibits dip and kink structures around the frequency of the pump light, a midgap absorption arising from photoinduced Floquet subbands, and a negative attenuation (gain) due to a population inversion.