Magnetotransport in a graphene monolayer with two tunable magnetic barriers

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	Magnetotransport in a graphene monolayer with two tunable magnetic barriers
	H. Y. Wang; X. W. Chen; B. H. Zhou; W. H. Liao; G. H. Zhou
	2011
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	406 期号:23 页码:4407-4411
摘要	The magnetotransport property for a monolayer graphene with two turnable magnetic barriers has been investigated by the transfer-matrix method. We show that the parameters of barrier height, width, and interval between two barriers affect the electron wave decaying length, which determine the conductance with parallel or antiparallel magnetization configuration, and consequently the tunneling magnetoresistance (TMR) for the system. Interestingly, a graphene attached by two barriers with different heights can produce a resonant TMR peak at low energy region one order of magnitude larger than that for the system with two same height barriers because that the asymmetry of magnetic barriers block the electron transmission in the case of antiparallel magnetization configuration. The results obtained here may be useful in understanding of electron tunneling in graphene and in designing of graphene-based nanodevices. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[wang, haiyan; chen, xiongwen; zhou, benhu; zhou, guanghui] hunan normal univ, dept phys, changsha 410081, hunan, peoples r china. [wang, haiyan; chen, xiongwen; zhou, benhu; zhou, guanghui] hunan normal univ, key lab low dimens quantum struct & manipulat, minist educ, changsha 410081, hunan, peoples r china. [liao, wenhu] jishou univ, dept phys, jishou 416000, peoples r china. [zhou, guanghui] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;zhou, gh (reprint author), hunan normal univ, dept phys, changsha 410081, hunan, peoples r china;ghzhou@hunnu.edu.cn
关键词	Graphene Magnetotransport Scattering Matrix
URL	查看原文
WOS记录号	WOS:000296872800014
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30727
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Y. Wang,X. W. Chen,B. H. Zhou,et al. Magnetotransport in a graphene monolayer with two tunable magnetic barriers[J]. Physica B-Condensed Matter,2011,406(23):4407-4411.
APA	H. Y. Wang,X. W. Chen,B. H. Zhou,W. H. Liao,&G. H. Zhou.(2011).Magnetotransport in a graphene monolayer with two tunable magnetic barriers.Physica B-Condensed Matter,406(23),4407-4411.
MLA	H. Y. Wang,et al."Magnetotransport in a graphene monolayer with two tunable magnetic barriers".Physica B-Condensed Matter 406.23(2011):4407-4411.

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