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Condensed Matter > Mesoscale and Nanoscale Physics

Title: Symmetry-induced even/odd parity in charge and heat pumping

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.
Comments: Regarding changes made, the supplementary Material has been integrated into the main text
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Strongly Correlated Electrons (cond-mat.str-el); Quantum Physics (quant-ph)
Journal reference: Phys. Rev. B 103, 174307 (2021)
DOI: 10.1103/PhysRevB.103.174307
Cite as: arXiv:2012.11970 [cond-mat.mes-hall]
  (or arXiv:2012.11970v2 [cond-mat.mes-hall] for this version)

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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