Anomalous anisotropic magnetoresistance effects in graphene

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	Anomalous anisotropic magnetoresistance effects in graphene
	Liu, YW ; Yang, R ; Yang, HL ; Wang, DM ; Zhan, QF ; Zhang, GY ; Xie, YL ; Chen, B ; Li, RW
刊名	AIP ADVANCES
	2014
卷号	4 期号:9
ISSN号	2158-3226
通讯作者	Liu, YW (reprint author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China.
中文摘要	We investigate the effect of external stimulus (temperature, magnetic field, and gases adsorptions) on anisotropic magnetoresistance (AMR) in multilayer graphene. The graphene sample shows superlinear magnetoresistance when magnetic field is perpendicular to the plane of graphene. A non-saturated AMR with a value of -33% is found at 10 K under a magnetic field of 7 T. It is surprisingly to observe that a two-fold symmetric AMR at high temperature is changed into a one-fold one at low temperature for a sample with an irregular shape. The anomalous AMR behaviors may be understood by considering the anisotropic scattering of carriers from two asymmetric edges and the boundaries of V+(V-) electrodes which serve as active adsorption sites for gas molecules at low temperature. Our results indicate that AMR in graphene can be optimized by tuning the adsorptions, sample shape and electrode distribution in the future application. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
资助信息	National Natural Science Foundation of China [11304326, 11174302, 11374312, 11274321]; State Key Project of Fundamental Research of China [2012CB933004]; Ningbo Science and Technology Innovation Team [2011B82004]; Ningbo Natural Science Foundations [2013A610083]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58848]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Liu, YW,Yang, R,Yang, HL,et al. Anomalous anisotropic magnetoresistance effects in graphene[J]. AIP ADVANCES,2014,4(9).
APA	Liu, YW.,Yang, R.,Yang, HL.,Wang, DM.,Zhan, QF.,...&Li, RW.(2014).Anomalous anisotropic magnetoresistance effects in graphene.AIP ADVANCES,4(9).
MLA	Liu, YW,et al."Anomalous anisotropic magnetoresistance effects in graphene".AIP ADVANCES 4.9(2014).