An unusual magnetoresistance effect in the heterojunction structure of an ultrathin single-crystal Pb film on silicon substrate

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	An unusual magnetoresistance effect in the heterojunction structure of an ultrathin single-crystal Pb film on silicon substrate
	Wang, J ; Ma, XC ; Qi, Y ; Fu, YS ; Ji, SH ; Lu, L ; Xie, XC ; Jia, JF ; Chen, X ; Xue, QK
刊名	NANOTECHNOLOGY
	2008
卷号	19 期号:47
关键词	THIN-FILMS SUPERCONDUCTIVITY TRANSITION PHYSICS VORTICES CHARGE
ISSN号	0957-4484
通讯作者	Wang, J: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	The electron transport of metal-insulator-semiconductor nanowire (MIS) structure consisting of the Al electrode covered by a thin alumina oxide layer and a single ZnSe nanowire was studied experimentally. The I-V measurement of an individual ZnSe nanowire contacted to Au and the alumina oxide covered Al electrodes, which resulted in metal-semiconductor (MS) and MIS structures at Au/ZnSe and Al/AlOx/ZnSe interfaces, respectively, has been carried out by in situ transmission electron microscopy (TEM). These measured I-V curves have the typical nonlinear feature coincident with the Schottky contact barriers at the interfaces between the semiconductor and metal electrodes. There is no current recorded between 3.8 V, and the threshold voltage range was therefore examined. This high threshold voltage obviously resulted from the thin alumina oxide layer at the surface of the Al electrode, which acts as an insulator and, consequently, results in high contact barrier. The asymmetrical characteristics resulting from slow increase in current under the reverse bias can be explained by part of the electrons in Al electrode tunneling the alumina oxide at the energy levels corresponding to the position of the bandgap of the ZnSe semiconductor.
收录类别	SCI
资助信息	National Science Foundation; Ministry of Science and Technology of China; Penn State MRSEC [DMR-0820404]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33681]
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	Wang, J,Ma, XC,Qi, Y,et al. An unusual magnetoresistance effect in the heterojunction structure of an ultrathin single-crystal Pb film on silicon substrate[J]. NANOTECHNOLOGY,2008,19(47).
APA	Wang, J.,Ma, XC.,Qi, Y.,Fu, YS.,Ji, SH.,...&Xue, QK.(2008).An unusual magnetoresistance effect in the heterojunction structure of an ultrathin single-crystal Pb film on silicon substrate.NANOTECHNOLOGY,19(47).
MLA	Wang, J,et al."An unusual magnetoresistance effect in the heterojunction structure of an ultrathin single-crystal Pb film on silicon substrate".NANOTECHNOLOGY 19.47(2008).