中国物理B ›› 2022, Vol. 31 ›› Issue (1): 17302-017302.doi: 10.1088/1674-1056/ac0795

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Spin transport properties for B-doped zigzag silicene nanoribbons with different edge hydrogenations

Jing-Fen Zhao(赵敬芬), Hui Wang(王辉), Zai-Fa Yang(杨在发), Hui Gao(高慧), Hong-Xia Bu(歩红霞), and Xiao-Juan Yuan(袁晓娟)   

  1. School of Physics and Electronic Engineering, Qilu Normal University, Jinan 250100, China
  • 收稿日期:2021-03-25 修回日期:2021-05-27 接受日期:2021-06-03 出版日期:2021-12-03 发布日期:2021-12-23
  • 通讯作者: Jing-Fen Zhao E-mail:jingfenzhao@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundations of China (Grant No. 11574118) and the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019PEM006).

Spin transport properties for B-doped zigzag silicene nanoribbons with different edge hydrogenations

Jing-Fen Zhao(赵敬芬), Hui Wang(王辉), Zai-Fa Yang(杨在发), Hui Gao(高慧), Hong-Xia Bu(歩红霞), and Xiao-Juan Yuan(袁晓娟)   

  1. School of Physics and Electronic Engineering, Qilu Normal University, Jinan 250100, China
  • Received:2021-03-25 Revised:2021-05-27 Accepted:2021-06-03 Online:2021-12-03 Published:2021-12-23
  • Contact: Jing-Fen Zhao E-mail:jingfenzhao@163.com
  • Supported by:
    Project supported by the National Natural Science Foundations of China (Grant No. 11574118) and the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019PEM006).

摘要: Exploring silicon-based spin modulating junction is one of the most promising areas of spintronics. Using nonequilibrium Green's function combined with density functional theory, a set of spin filters of hydrogenated zigzag silicene nanoribbons is designed by substituting a silicon atom with a boron one and the spin-correlated transport properties are studied. The results show that the spin polarization can be realized by structural symmetry breaking induced by boron doping. Remarkably, by tuning the edge hydrogenation, it is found that the spin filter efficiency can be varied from 30% to 58%. Moreover, it is also found and explained that the asymmetric hydrogenation can give rise to an obvious negative differential resistance which usually appears at weakly coupled junction. These findings indicate that the boron-doped ZSiNR is a promising material for spintronic applications.

关键词: silicene nanoribbons, spin filtering effect, negative differential resistance

Abstract: Exploring silicon-based spin modulating junction is one of the most promising areas of spintronics. Using nonequilibrium Green's function combined with density functional theory, a set of spin filters of hydrogenated zigzag silicene nanoribbons is designed by substituting a silicon atom with a boron one and the spin-correlated transport properties are studied. The results show that the spin polarization can be realized by structural symmetry breaking induced by boron doping. Remarkably, by tuning the edge hydrogenation, it is found that the spin filter efficiency can be varied from 30% to 58%. Moreover, it is also found and explained that the asymmetric hydrogenation can give rise to an obvious negative differential resistance which usually appears at weakly coupled junction. These findings indicate that the boron-doped ZSiNR is a promising material for spintronic applications.

Key words: silicene nanoribbons, spin filtering effect, negative differential resistance

中图分类号:  (Electronic transport in nanoscale materials and structures)

  • 73.63.-b
72.25.-b (Spin polarized transport) 72.80.Vp (Electronic transport in graphene)