SKM 2023 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 22: Nonequilibrium Quantum Many-Body Systems I (joint session TT/DY)

TT 22.9: Vortrag

Dienstag, 28. März 2023, 12:00–12:15, HSZ 204

Correlated Mott insulators and photovoltaics out of equilibrium: phonons and heat dissipation — •Enrico Arrigoni, Tommaso Mazzocchi, Paolo Gazzaneo, Daniel Werner, and Jan Lotze — Institute of Theoretical and Computational Physics, Graz University of Technology, 8010 Graz Austria

I will present recent results for correlated Mott systems in a nonequilibrium driven steady state. Results are obtained via nonequilibrium Dynamical Mean Field Theory with an impurity solver based upon a combination of Keldysh Green’s functions and Lindblad formalism for open quantum systems [1]. Recent improvements based upon a Configuration Interaction treatment of the many body Lindblad equation allow for an efficient solution of the impurity problem deep in the Kondo regime [2].

In particular, I will discuss the interplay of strong correlation and Joule dissipation by phonons near the Mott dielectric breakdown [3] and in photoexcitation induced transport across a Mott insulating gap [4].
[1] E. Arrigoni et al., Phys. Rev. Lett. 110, 086403 (2013)
A. Dorda et al., Phys. Rev. B 89 165105 (2014)
A. Dorda et al., Phys. Rev. B 92, 125145 (2015)
[2] D. Werner et al., arXiv:2210.09623 (2022)
[3] T. Mazzocchi at al., Phys. Rev. B 106, 125123 (2022)
[4] M. Sorantin et al., Phys. Rev. B 97, 115113 (2018)
P. Gazzaneo et al. Phys. Rev. B 106, 195140 (2022)