Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study

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	Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study
	Zhu YH ; Xia JB
刊名	physical review b
	2007
卷号	75 期号:20 页码:art.no.205113
关键词	MAGNETIC SEMICONDUCTORS
ISSN号	issn: 1098-0121
通讯作者	zhu, yh, chinese acad sci, inst semicond, pob 912, beijing 100083, peoples r china.
中文摘要	based on the effective-mass model and the mean-field approximation, we investigate the energy levels of the electron and hole states of the mn-doped zno quantum wires (x=0.0018) in the presence of the external magnetic field. it is found that either twofold degenerated electron or fourfold degenerated hole states split in the field. the splitting energy is about 100 times larger than those of undoped cases. there is a dark exciton effect when the radius r is smaller than 16.6 nm, and it is independent of the effective doped mn concentration. the lowest state transitions split into six zeeman components in the magnetic field, four sigma(+/-) and two pi polarized zeeman components, their splittings depend on the mn-doped concentration, and the order of pi and sigma(+/-) polarized zeeman components is reversed for thin quantum wires (r < 2.3 nm) due to the quantum confinement effect.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-29
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/9402]
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	Zhu YH,Xia JB. Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study[J]. physical review b,2007,75(20):art.no.205113.
APA	Zhu YH,&Xia JB.(2007).Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study.physical review b,75(20),art.no.205113.
MLA	Zhu YH,et al."Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study".physical review b 75.20(2007):art.no.205113.