Nonequilibrium $GW+\mathrm{EDMFT}$: Antiscreening and Inverted Populations from Nonlocal Correlations
- Golež, Denis Department of Physics, University of Fribourg, Switzerland
- Boehnke, Lewin Department of Physics, University of Fribourg, Switzerland
- Strand, Hugo U. R. Department of Physics, University of Fribourg, Switzerland
- Eckstein, Martin Max-Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
- Werner, Philipp Department of Physics, University of Fribourg, Switzerland
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15.06.2017
Published in:
- Physical Review Letters. - 2017, vol. 118, no. 24, p. 246402
English
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.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 305133
- DOI 10.1103/PhysRevLett.118.246402
- Persistent URL
- https://folia.unifr.ch/unifr/documents/306149
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