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Coherent magnetotransport and time-dependent transport through split-gated quantum constrictions

Authors
  • Torfason, Kristinn
  • Tang, Chi-Shung
  • Gudmundsson, Vidar
Type
Published Article
Publication Date
Jul 30, 2009
Submission Date
Jul 30, 2009
Identifiers
DOI: 10.1103/PhysRevB.80.195322
Source
arXiv
License
Yellow
External links

Abstract

The authors report on modeling of transport spectroscopy in split-gate controlled quantum constrictions. A mixed momentum-coordinate representation is employed to solve a set of time-dependent Lippmann-Schwinger equations with intricate coupling between the subbands and the sidebands. Our numerical results show that the transport properties are tunable by adjusting the ac-biased split-gates and the applied perpendicular magnetic field. We illustrate time-modulated quasibound-state features involving inter-sideband transitions and the Aharonov-Bohm oscillation characteristics in the split-gated systems.

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