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

被引：4
|
作者：
Torfason, Kristinn [1 ]
Tang, Chi-Shung [2 ]
Gudmundsson, Vidar [1 ]
机构：
[1] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland
[2] Natl United Univ, Dept Mech Engn, Miaoli 36003, Taiwan
来源：
PHYSICAL REVIEW B | 2009年 / 80卷 / 19期
关键词：
Aharonov-Bohm effect; galvanomagnetic effects; POINT-CONTACT; RESONANCES; SCATTERING; STATE; FIELD; RING;
D O I：
10.1103/PhysRevB.80.195322
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 the Aharonov-Bohm oscillation characteristics in the split-gated systems and the time-modulated quasibound-state features involving intersideband transitions.
引用
收藏
页数：8
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