2017/02/28 by Denis Golež, Denis Golez, Lewin Boehnke +4
Materials Science · Physics and Astronomy · #Condensed matter physics #Formalism (music) #Magnetic and transport properties of perovskites and related materials #Mott insulator #Non-equilibrium thermodynamics #Physics #Physics of Superconductivity and Magnetism #Population #Quantum and electron transport phenomena #Quantum mechanics #Spectral line #Statistical physics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.118.246402
published as Phys. Rev. Lett. 118, 246402 (2017)
arxiv created 2017/04/27 · openalex created_date 2017/05/12 · openalex publication_date 2017/06/15 · arxiv updated 2017/06/21 · openalex updated_date 2026/08/06
We study the dynamics of screening in photodoped Mott insulators with long-ranged interactions using a nonequilibrium implementation of the GW plus extended dynamical mean-field theory formalism. Our study demonstrates that the complex interplay of the injected carriers with bosonic degrees of freedom (charge fluctuations) can result in long-lived transient states with properties that are distinctly different from those of thermal equilibrium states. Systems with strong nonlocal interactions are found to exhibit a self-sustained population inversion of the doublons and holes. This population inversion leads to low-energy antiscreening which can be detected in time-resolved electron-energy-loss spectra.