Electronic states and magnetotransport in quantum waveguides with nonuniform magnetic fields

CORC > 半导体研究所 > 中国科学院半导体研究所 > 中国科学院半导体研究所（2009年前）

	Electronic states and magnetotransport in quantum waveguides with nonuniform magnetic fields
	Gu BY ; Sheng WD ; Wang XH ; Wang J
刊名	physical review b
	1997
卷号	56 期号:20 页码:13434-13441
关键词	LATERAL SURFACE SUPERLATTICES WAVE-GUIDE WIRE SYSTEM TRANSPORT TRANSMISSION LOCALIZATION CONDUCTANCE DEVICE MOTION WELLS
ISSN号	1098-0121
通讯作者	gu by ccastworld labpob 8730beijing 100080peoples r china.
中文摘要	the electronic states and magnetotransport properties of quantum waveguides (qw's) in the presence of nonuniform magnetic fields perpendicular to the qw plane are investigated theoretically. it is found that the magnetoconductance of those structures as a function of fermi energy exhibits stepwise variation or square-wave-like oscillations, depending on the specific distributions (both in magnitude and direction) of nonuniform magnetic fields in qw's. we have investigated the dual magnetic strip structures and three magnetic strip structures. the character of the magnetotransport is closely related to the effective magnetic potential and the energy-dispersion spectrum of electron in the structures. it is found that dispersion relations seem to be combined by different sets of dispersion curves that belong to different individual magnetic subwaveguides. the magnetic effective potential leads to the coupling of states and the substantial distortion of the original dispersion curves at the interfaces in which the abrupt change of magnetic fields appears. magnetic scattering states are created. only in some three magnetic strip structures, these scattering states produce the dispersion relations with oscillation structures superimposed on the bulk landau levels. it is the oscillatory behavior in dispersions that leads to the occurrence of square-wave-like modulations in conductance.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-11-17
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/15111]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Gu BY,Sheng WD,Wang XH,et al. Electronic states and magnetotransport in quantum waveguides with nonuniform magnetic fields[J]. physical review b,1997,56(20):13434-13441.
APA	Gu BY,Sheng WD,Wang XH,&Wang J.(1997).Electronic states and magnetotransport in quantum waveguides with nonuniform magnetic fields.physical review b,56(20),13434-13441.
MLA	Gu BY,et al."Electronic states and magnetotransport in quantum waveguides with nonuniform magnetic fields".physical review b 56.20(1997):13434-13441.