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arXiv · 1804.04999

Finite-frequency dissipation in a driven Kondo model

Pier Paolo Baruselli·Erio Tosatti
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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.

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Pier Paolo Baruselli, Erio Tosatti. 2018-04-13. Finite-frequency dissipation in a driven Kondo model. https://arxiv.org/abs/1804.04999

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