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Entropy 2019, 21(2), 209; https://doi.org/10.3390/e21020209

Quantum Pumping with Adiabatically Modulated Barriers in Three-Band Pseudospin-1 Dirac–Weyl Systems

Department of Physics, South China University of Technology, Guangzhou 510641, China
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Received: 28 November 2018 / Revised: 4 February 2019 / Accepted: 4 February 2019 / Published: 22 February 2019
(This article belongs to the Special Issue Quantum Transport in Mesoscopic Systems)
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Abstract

In this work, pumped currents of the adiabatically-driven double-barrier structure based on the pseudospin-1 Dirac–Weyl fermions are studied. As a result of the three-band dispersion and hence the unique properties of pseudospin-1 Dirac–Weyl quasiparticles, sharp current-direction reversal is found at certain parameter settings especially at the Dirac point of the band structure, where apexes of the two cones touch at the flat band. Such a behavior can be interpreted consistently by the Berry phase of the scattering matrix and the classical turnstile mechanism. View Full-Text
Keywords: quantum transport quantum transport
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Chen, X.; Zhu, R. Quantum Pumping with Adiabatically Modulated Barriers in Three-Band Pseudospin-1 Dirac–Weyl Systems. Entropy 2019, 21, 209.

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