Nonequilibrium GW+EDMFT: Antiscreening and Inverted Populations from Nonlocal 
Correlations

Golež, D.; Boehnke, L.; Strand, H. U. R.; Eckstein, M.; Werner, P.

doi:10.1103/PhysRevLett.118.246402

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Journal Article

Nonequilibrium GW+EDMFT: Antiscreening and Inverted Populations from Nonlocal Correlations

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Eckstein, M.
Theory of Correlated Systems out of Equilibrium, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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https://dx.doi.org/10.1103/PhysRevLett.118.246402
(Publisher version)

https://arxiv.org/abs/1702.04952
(Preprint)

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PhysRevLett.118.246402.pdf
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supplementary.pdf
(Supplementary material), 170KB

Citation

Golež, D., Boehnke, L., Strand, H. U. R., Eckstein, M., & Werner, P. (2017). Nonequilibrium GW+EDMFT: Antiscreening and Inverted Populations from Nonlocal Correlations. Physical Review Letters, 118(24): 246402. doi:10.1103/PhysRevLett.118.246402.

Cite as: https://hdl.handle.net/21.11116/0000-0001-9D92-9

Abstract

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.