Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field

doi:10.1088/1674-1056/26/7/077201

中国物理B ›› 2017, Vol. 26 ›› Issue (7): 77201-077201.doi: 10.1088/1674-1056/26/7/077201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field

Li-Jie Huang(黄立捷), Lian Liu(刘恋), Rui-Qiang Wang(王瑞强), Liang-Bin Hu(胡梁宾)

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510631, China

收稿日期:2017-02-20 修回日期:2017-04-17 出版日期:2017-07-05 发布日期:2017-07-05
通讯作者: Liang-Bin Hu E-mail:lbhu@126.com

Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field

Li-Jie Huang(黄立捷), Lian Liu(刘恋), Rui-Qiang Wang(王瑞强), Liang-Bin Hu(胡梁宾)

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510631, China

Received:2017-02-20 Revised:2017-04-17 Online:2017-07-05 Published:2017-07-05
Contact: Liang-Bin Hu E-mail:lbhu@126.com

摘要/Abstract

摘要：

By solving the Bogoliubov–de Gennes equation, the influence of the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field on the spin-polarized coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions is investigated based on the Blonder–Tinkham–Klapwijk theory. The coherence effect is characterized by the strong oscillations of the charge conductance as a function of the bias voltage or the thickness of the semiconductor nanowire, resulting from the quantum interference of incoming and outgoing quasiparticles in the nanowire. Such oscillations can be effectively modulated by varying the strength of the Rashba spin–orbit coupling, the thickness of the nanowire, or the strength of the external magnetic field. It is also shown that two different types of zero-bias conductance peaks may occur under some particular conditions, which have some different characteristics and may be due to different mechanisms.

关键词: Rashba spin–, orbit coupling, induced superconducting pair potential, coherent charge transport, zero-bias conductance peaks

Abstract:

Key words: Rashba spin–, orbit coupling, induced superconducting pair potential, coherent charge transport, zero-bias conductance peaks

中图分类号: (Theory of electronic transport; scattering mechanisms)

72.10.-d

72.20.-i (Conductivity phenomena in semiconductors and insulators) 73.50.Jt (Galvanomagnetic and other magnetotransport effects) 74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions)

黄立捷, 刘恋, 王瑞强, 胡梁宾. Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field[J]. 中国物理B, 2017, 26(7): 77201-077201.

Li-Jie Huang(黄立捷), Lian Liu(刘恋), Rui-Qiang Wang(王瑞强), Liang-Bin Hu(胡梁宾). Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field[J]. Chin. Phys. B, 2017, 26(7): 77201-077201.

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Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field

Coherent charge transport in ferromagnet/semiconductor nanowire/ferromagnet double barrier junctions with the interplay of Rashba spin–orbit coupling, induced superconducting pair potential, and external magnetic field

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