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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Symmetry-induced even/odd parity in charge and heat pumping
(Submitted on 22 Dec 2020 (v1), last revised 24 May 2021 (this version, v2))
Abstract: It is shown that the presence of discrete symmetries in Floquet systems connected to metallic reservoirs imprints a definite parity on the charge and heat pumping as a function of the reservoir's chemical potential, $\mu$. In particular, when particle-hole symmetry (PHS) holds, the pumping of charge (heat) is an odd (even) function of $\mu$. Whereas, if only the product of PHS and parity symmetry is present, pumping of charge (heat) is even (odd) in $\mu$. Our results also extend to the presence of other unitary symmetries and provide a simple criterion for reversing (or maintaining) the direction of the flow. We illustrate our findings using two variants of the Su-Schrieffer-Heeger model under a time-periodic perturbation.
Submission history
From: Pedro Ninhos [view email][v1] Tue, 22 Dec 2020 12:48:39 GMT (87kb,D)
[v2] Mon, 24 May 2021 11:32:29 GMT (80kb,D)
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