標題: Finger-gate manipulated quantum transport in a semiconductor narrow constriction with spin-orbit interactions and Zeeman effect
作者: Tang, Chi-Shung
Chang, Shu-Yu
Cheng, Shun-Jen
電子物理學系
Department of Electrophysics
公開日期: 24-九月-2012
摘要: The authors investigate quantum transport in a narrow constriction fabricated by narrow-band-gap semiconductor materials with spin-orbit couplings. We consider the Rashba-Dresselhaus (RD) spin-orbit interactions (SOIs) and the Zeeman effect induced by an in-plane magnetic field along the transport direction. The interplay of the RD SOI and the Zeeman effect may induce a SOI-Zeeman gap and influence the transport properties. We demonstrate that an attractive scattering potential may induce an electronlike quasi-bound-state feature and manifest the RD-SOI-Zeeman induced Fano line shape in conductance. Furthermore, a repulsive scattering potential may induce a holelike quasi-bound-state feature on the subband top of the lower spin branch.
URI: http://dx.doi.org/10.1103/PhysRevB.86.125321
http://hdl.handle.net/11536/16844
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.86.125321
期刊: PHYSICAL REVIEW B
Volume: 86
Issue: 12
結束頁: 
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