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

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

2009-07-30

arxiv.org/abs/0907.5262v1

Phys. Rev. B 80, 195322 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTeX (pdf-LaTeX), 8 pages with 10 included jpg figures

Scientific paper

10.1103/PhysRevB.80.195322

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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