Spin-current pump in silicene

doi:10.1088/1674-1056/27/5/057801

中国物理B ›› 2018, Vol. 27 ›› Issue (5): 57801-057801.doi: 10.1088/1674-1056/27/5/057801

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

Spin-current pump in silicene

John Tombe Jada Marcellino, Mei-Juan Wang(王美娟), Sa-Ke Wang(汪萨克), Jun Wang(汪军)

1 Department of Physics, Southeast University, Nanjing 210096, China;
2 Department of Fundamental Courses, Jinling Institute of Technology, Nanjing 211169, China

收稿日期:2018-01-10 修回日期:2018-02-26 出版日期:2018-05-05 发布日期:2018-05-05
通讯作者: Jun Wang E-mail:jwang@seu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos.11274059,11574045,and 11704165).

Spin-current pump in silicene

John Tombe Jada Marcellino¹, Mei-Juan Wang(王美娟)¹, Sa-Ke Wang(汪萨克)², Jun Wang(汪军)¹

1 Department of Physics, Southeast University, Nanjing 210096, China;
2 Department of Fundamental Courses, Jinling Institute of Technology, Nanjing 211169, China

Received:2018-01-10 Revised:2018-02-26 Online:2018-05-05 Published:2018-05-05
Contact: Jun Wang E-mail:jwang@seu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos.11274059,11574045,and 11704165).

摘要/Abstract

摘要：

We report a theoretical study of pumped spin currents in a silicene-based pump device, where two time-dependent staggered potentials are introduced through the perpendicular electric fields and a magnetic insulator is considered in between the two pumping potentials to magnetize the Dirac electrons. It is shown that giant spin currents can be generated in the pump device because the pumping can be optimal for each transport mode, the pumping current is quantized. By controlling the relevant parameters of the device, both pure spin currents and fully spin-polarized currents can be obtained. Our results may shed a new light on the generation of pumped spin currents in Dirac-electron systems.

关键词: spin currents, charge pump, quantization, silicene

Abstract:

Key words: spin currents, charge pump, quantization, silicene

中图分类号: (Electro-optical effects)

78.20.Jq

71.70.Fk (Strain-induced splitting) 72.80.Vp (Electronic transport in graphene)

John Tombe Jada Marcellino, 王美娟, 汪萨克, 汪军. Spin-current pump in silicene[J]. 中国物理B, 2018, 27(5): 57801-057801.

John Tombe Jada Marcellino, Mei-Juan Wang(王美娟), Sa-Ke Wang(汪萨克), Jun Wang(汪军). Spin-current pump in silicene[J]. Chin. Phys. B, 2018, 27(5): 57801-057801.

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Spin-current pump in silicene

Spin-current pump in silicene

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