Symmetry-induced even/odd parity in charge and heat pumping
arXiv:2012.11970 · doi:10.1103/PhysRevB.103.174307
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, . In particular, when particle-hole symmetry (PHS) holds, the pumping of charge (heat) is an odd (even) function of . Whereas, if only the product of PHS and parity symmetry is present, pumping of charge (heat) is even (odd) in . 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.
arXiv commentRegarding changes made, the supplementary Material has been integrated into the main text
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