中国物理B ›› 2021, Vol. 30 ›› Issue (10): 107302-107302.doi: 10.1088/1674-1056/ac1e16

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Goos-Hänchen-like shift related to spin and valley polarization in ferromagnetic silicene

Mei-Rong Liu(刘美荣)1, Zheng-Fang Liu(刘正方)1,†, Ruo-Long Zhang(张若龙)1, Xian-Bo Xiao(肖贤波)2, and Qing-Ping Wu(伍清萍)1,‡   

  1. 1 Department of Applied Physics, East China Jiaotong University, Nanchang 330013, China;
    2 School of Computer Science, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
  • 收稿日期:2021-06-04 修回日期:2021-07-18 接受日期:2021-08-17 发布日期:2021-09-30
  • 通讯作者: Zheng-Fang Liu, Qing-Ping Wu E-mail:lzhengfang@ecjtu.edu.cn;wuqingping78519@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11864012 and 11764013), the Natural Science Foundation of Jiangxi Province, China (Grant No. 20202BABL201018), and Jiangxi University of Traditional Chinese Medicine 1050 Youth Talent Project (Grant No. 5142001010).

Goos-Hänchen-like shift related to spin and valley polarization in ferromagnetic silicene

Mei-Rong Liu(刘美荣)1, Zheng-Fang Liu(刘正方)1,†, Ruo-Long Zhang(张若龙)1, Xian-Bo Xiao(肖贤波)2, and Qing-Ping Wu(伍清萍)1,‡   

  1. 1 Department of Applied Physics, East China Jiaotong University, Nanchang 330013, China;
    2 School of Computer Science, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
  • Received:2021-06-04 Revised:2021-07-18 Accepted:2021-08-17 Published:2021-09-30
  • Contact: Zheng-Fang Liu, Qing-Ping Wu E-mail:lzhengfang@ecjtu.edu.cn;wuqingping78519@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11864012 and 11764013), the Natural Science Foundation of Jiangxi Province, China (Grant No. 20202BABL201018), and Jiangxi University of Traditional Chinese Medicine 1050 Youth Talent Project (Grant No. 5142001010).

摘要: We study the Goos-Hänchen-like shift of single silicene barrier under the external perpendicular electric field, off-resonant circularly polarized light and the exchange field modulation using the stationary-phase method. The results show that the Goos-Hänchen-like shift of silicene resulting from the external perpendicular electric field does not have the characteristics of spin or valley polarization, while that from off-resonant circularly polarized light or the exchange field is spin-polarized. More importantly, the combined effect of the external perpendicular electric field and the exchange field or off-resonant circularly polarized light can cause the Goos-Hänchen-like shift of the system to be spin and valley polarized. It is particularly worth noting that when the three modulations are considered at the same time, as the exchange field changes, the system will have a positive or negative Goos-Hänchen-like shift.

关键词: Goos-Hänchen-like shift, silicene, polarization

Abstract: We study the Goos-Hänchen-like shift of single silicene barrier under the external perpendicular electric field, off-resonant circularly polarized light and the exchange field modulation using the stationary-phase method. The results show that the Goos-Hänchen-like shift of silicene resulting from the external perpendicular electric field does not have the characteristics of spin or valley polarization, while that from off-resonant circularly polarized light or the exchange field is spin-polarized. More importantly, the combined effect of the external perpendicular electric field and the exchange field or off-resonant circularly polarized light can cause the Goos-Hänchen-like shift of the system to be spin and valley polarized. It is particularly worth noting that when the three modulations are considered at the same time, as the exchange field changes, the system will have a positive or negative Goos-Hänchen-like shift.

Key words: Goos-Hänchen-like shift, silicene, polarization

中图分类号:  (Electronic transport in mesoscopic systems)

  • 73.23.-b
72.25.-b (Spin polarized transport)