Finite-frequency dissipation in a driven Kondo model
Strongly Correlated Electrons
2018-04-16 v1
Abstract
Using both a resonant level model and the time-dependent Gutzwiller approximation, we study the power dissipation of a localized impurity hybridized with a conduction band when the hybridization is periodically switched on and off. The total dissipated energy is proportional to the Kondo temperature, with a non-trivial frequency dependence. At low frequencies it can be well approximated by the one of a single quench, and is obtainable analitically; at intermediate frequencies it undergoes oscillations; at high frequencies, after reaching its maximum, it quickly drops to zero. This frequency-dependent energy dissipation could be relevant to systems such as irradiated quantum dots, where Kondo can be switched at very high frequencies.
Cite
@article{arxiv.1804.04999,
title = {Finite-frequency dissipation in a driven Kondo model},
author = {Pier Paolo Baruselli and Erio Tosatti},
journal= {arXiv preprint arXiv:1804.04999},
year = {2018}
}