Fermi velocity modulation of spin-dependent transport in graphene

被引：4

作者：

Wu, Qing-Ping ^{[1
]}

Liu, Zheng-Fang ^{[1
]}

Chen, Ai-Xi ^{[1
,2
]}

Xiao, Xian-Bo ^{[3
]}

机构：

[1] East China Jiaotong Univ, Dept Appl Phys, Nanchang 330013, Peoples R China

[2] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

[3] Jiangxi Univ Tradit Chinese Med, Sch Comp, Nanchang 330004, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2015年 / 48卷 / 35期

基金：

中国国家自然科学基金;

关键词：

graphene; spin transport; fermi velocity;

D O I：

10.1088/0022-3727/48/35/355304

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study spin-dependent transport in a two-dimensional graphene structure with Rashba spin-orbit interaction and spatially-varying Fermi velocity. The numerical results show that the spin precession and Brewster-like angle induced by the Rashba spin-orbit interaction can be tuned efficiently by the Fermi velocity. Characteristics of transmission probability is also reflected in the conductance and magnetoresistance. The spin-dependent conductance express the precession behavior, which leads to the magnetoresistance not only showing the oscillation feature but that it can be negative as well.

引用

页数：6

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