Effect of a Highly Metallic Surface State on the Magneto-Transport Properties of Single Crystal Bi Films

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	Effect of a Highly Metallic Surface State on the Magneto-Transport Properties of Single Crystal Bi Films
	Yin, SL ; Liang, XJ ; Zhao, HW
刊名	CHINESE PHYSICS LETTERS
	2013
卷号	30 期号:8
ISSN号	0256-307X
通讯作者	Zhao, HW (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The magneto-transport properties of thin single crystal Bi films epitaxial grown on Si (111)-7 x 7 surfaces are investigated systematically as functions of film thickness (5-55 nm) and temperature. Under a perpendicular magnetic field, the positive magnetoresistance (PMR) effect is normally found, and its curve shapes are evolved systematically with film thickness. In contrast, under parallel magnetic fields the PMR effect observed for thinner Bi films develops into the negative magnetoresistance effect with the increasing magnetic field for the thicker Bi film. Our analysis indicates that there exists strong competition between the weak anti-localization effect in the surface states and the weak-localization effect in the bulk states of the Bi film, which induces the anomalous changes in the parallel magneto-resistance curves. The temperature-dependent experiments further demonstrate that the surface state plays an important role in the magneto-transport process of Bi films.
资助信息	National Basic Research Program of China [2009CB930803]; National Natural Science Foundation of China [10834012]; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-YW-W24]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56915]
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	Yin, SL,Liang, XJ,Zhao, HW. Effect of a Highly Metallic Surface State on the Magneto-Transport Properties of Single Crystal Bi Films[J]. CHINESE PHYSICS LETTERS,2013,30(8).
APA	Yin, SL,Liang, XJ,&Zhao, HW.(2013).Effect of a Highly Metallic Surface State on the Magneto-Transport Properties of Single Crystal Bi Films.CHINESE PHYSICS LETTERS,30(8).
MLA	Yin, SL,et al."Effect of a Highly Metallic Surface State on the Magneto-Transport Properties of Single Crystal Bi Films".CHINESE PHYSICS LETTERS 30.8(2013).