Quantum pumping with adiabatically modulated barriers in three-band pseudospin-1 Dirac-Weyl systems
Mesoscale and Nanoscale Physics
2020-09-14 v1
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 touches at the flat band. Such a behavior can be interpreted consistently by the Berry phase of the scattering matrix and the classical turnstile mechanism.
Keywords
Cite
@article{arxiv.1812.00496,
title = {Quantum pumping with adiabatically modulated barriers in three-band pseudospin-1 Dirac-Weyl systems},
author = {Xiaomei Chen and Rui Zhu},
journal= {arXiv preprint arXiv:1812.00496},
year = {2020}
}