Dynamics of screening in photo-doped Mott insulators

Abstract

We use a nonequilibrium implementation of extended dynamical mean field theory to study the effect of dynamical screening in photo-excited Mott insulators. The insertion of doublons and holes adds low-energy screening modes and leads to a reduction of the Mott gap. The coupling to low-energy bosonic modes further- more opens new relaxation channels and significantly speeds up the thermalization process. We also consider the effect of the energy distribution of the doped carriers on the screening.

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• Ultrafast separation of photo-doped carriers in Mott antiferromagnets
• Photoinduced in-gap excitations in the one-dimensional extended Hubbard model
• Coexistence of excited polarons and metastable delocalized states in photo-induced metals

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• Nonequilibrium optical response of a one-dimensional Mott insulator
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• Effects of frustration on the nonequilibrium dynamics of photo-excited lattice systems
• Relationship between Population Dynamics and the Self-Energy in Driven Non-Equilibrium Systems
• Photo-induced charge-transfer renormalization in NiO
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• Beyond perturbation theory: A time-dependent approach to inelastic scattering spectroscopies in- and away from equilibrium
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• Measuring the ultrafast screening of $U$ in photo-excited charge-transfer insulators with time-resolved X-ray absorption spectroscopy
• Light-wave coherent control of the insulator-to-metal transition in a strongly correlated material