详细信息
Controllable spin filter composed of ferromagnetic AB-stacking bilayer graphenes ( SCI-EXPANDED收录 EI收录) 被引量:9
文献类型:期刊文献
英文题名:Controllable spin filter composed of ferromagnetic AB-stacking bilayer graphenes
作者:Yu, Yong[1,2,3];Liang, Qifeng[4];Dong, Jinming[1,2]
机构:[1]Nanjing Univ, Natl Lab Solid State Microstruct, Grp Computat Condensed Matter Phys, Nanjing 210093, Peoples R China;[2]Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China;[3]Jiangsu Inst Educ, Dept Phys, Nanjing 210013, Peoples R China;[4]Univ Shaoxing, Dept Phys, Shaoxing 312000, Peoples R China
年份:2011
卷号:375
期号:30-31
起止页码:2858
外文期刊名:PHYSICS LETTERS A
收录:SCI-EXPANDED(收录号:WOS:000293119600013)、、EI(收录号:20202208736356)、Scopus(收录号:2-s2.0-79959837218)、WOS
基金:This work was supported by the Natural Science Foundation of China under Grant No. 10874067 and also from a Grant for State Key Program of China through Grant Nos. 2010CB630704 and 2011CB922100Q. Liang was supported by the Natural Science Foundation of China under Grant No. 10904092.
语种:英文
外文关键词:Spin filter; Graphene; Conductance; Spin polarization
外文摘要:The electron's tunneling and spin transport in the normal/ferromagnetic/normal (N/FM/N) AB-stacking bilayer graphene (BLG) junction have been studied using Landauer-Buttiker formula. It is found that the resonant conductance peaks could be split well into spin-up and down ones by the exchange field in its FM barrier, leading to a very large spin polarization. More importantly, if a perpendicular electric field is also applied on the FM barrier, a completely spin-polarized flow can be realized by changing its barrier height, making the N/FM/N AB-stacking BLG junction act as a controllable spin filter. (C) 2011 Elsevier B.V. All rights reserved.
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