Electronic structure of paramagnetic In1-xMnx as nanowires

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 structure of paramagnetic In1-xMnx as nanowires
	Zhang, XW (Zhang, X. W.) ; Xia, JB (Xia, J. B.)
刊名	european physical journal b
	2007
卷号	58 期号:3 页码:263-268
关键词	QUANTUM-DOT
ISSN号	issn: 1434-6028
通讯作者	zhang, xw, chinese ctr adv sci & technol, world lab, pob 8730, beijing 100080, peoples r china. 电子邮箱地址: zhxw99@semi.ac.cn
中文摘要	the electronic structure, spin splitting energies, and g factors of paramagnetic in1-xmnxas nanowires under magnetic and electric fields are investigated theoretically including the sp-d exchange interaction between the carriers and the magnetic ion. we find that the effective g factor changes dramatically with the magnetic field. the spin splitting due to the sp-d exchange interaction counteracts the zeeman spin splitting. the effective g factor can be tuned to zero by the external magnetic field. there is also spin splitting under an electric field due to the rashba spin-orbit coupling which is a relativistic effect. the spin-degenerated bands split at nonzero k(z) (k(z) is the wave vector in the wire direction), and the spin-splitting bands cross at k(z) = 0, whose k(z)-positive part and negative part are symmetrical. a proper magnetic field makes the k(z)-positive part and negative part of the bands asymmetrical, and the bands cross at nonzero k(z). in the absence of magnetic field, the electron rashba coefficient increases almost linearly with the electric field, while the hole rashba coefficient increases at first and then decreases as the electric field increases. the hole rashba coefficient can be tuned to zero by the electric field.
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/172111/9288]
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	Zhang, XW ,Xia, JB . Electronic structure of paramagnetic In1-xMnx as nanowires[J]. european physical journal b,2007,58(3):263-268.
APA	Zhang, XW ,&Xia, JB .(2007).Electronic structure of paramagnetic In1-xMnx as nanowires.european physical journal b,58(3),263-268.
MLA	Zhang, XW ,et al."Electronic structure of paramagnetic In1-xMnx as nanowires".european physical journal b 58.3(2007):263-268.