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	Anisotropic zeeman splitting and stark shift of in(1-y)mn(y)as(1-x)n(x) oblate quantum dots
	Zhang, X. W.; Fan, W. J.; Li, S. S.; Xia, J. B.
刊名	Journal of applied physics
	2007-11-01
卷号	102期号:9页码:7
ISSN号	0021-8979
DOI	10.1063/1.2802529
通讯作者	Zhang, x. w.(zhxw99@semi.ac.cn)
英文摘要	The electronic structure, zeeman splitting, and stark shift of in(1-y)mn(y)as(1-x)n(x) oblate quantum dots are studied using the ten-band k center dot p model including the sp-d exchange interaction between the carriers and the magnetic ion. the zeeman splitting of the electron ground states is almost isotropic. the zeeman splitting of the hole ground states is highly anisotropic, with an anisotropy factor of 918 at b=0.1 t. the zeeman splittings of some of the electron and hole excited states are also highly anisotropic. it is because of the spin-orbit coupling which couples the spin states with the anisotropic space-wave functions due to the anisotropic shape. it is found that when the magnetic quantum number of total orbital angular momentum is nearly zero, the spin states couple with the space-wave functions very little, and the zeeman splitting is isotropic. conversely, if the magnetic quantum number of total orbital angular momentum is not zero, the space-wave functions in the degenerate states are different, and the zeeman splitting is highly anisotropic. the electron and hole stark shifts of oblate quantum dots are also highly anisotropic. the decrease of band gap with increasing nitrogen composition is much more obvious in the smaller radius case because the lowest conduction level is increased by the quantum confinement effect and is closer to the nitrogen level. (c) 2007 american institute of physics.
WOS关键词	EFFECTIVE-MASS ; ELECTRONIC-STRUCTURE ; OPTICAL-PROPERTIES ; SPHERES
WOS研究方向	Physics
WOS类目	Physics, Applied
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000250983700043
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2427123
专题	半导体研究所
通讯作者	Zhang, X. W.
作者单位	1.Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore 2.Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhang, X. W.,Fan, W. J.,Li, S. S.,et al. Anisotropic zeeman splitting and stark shift of in(1-y)mn(y)as(1-x)n(x) oblate quantum dots[J]. Journal of applied physics,2007,102(9):7.
APA	Zhang, X. W.,Fan, W. J.,Li, S. S.,&Xia, J. B..(2007).Anisotropic zeeman splitting and stark shift of in(1-y)mn(y)as(1-x)n(x) oblate quantum dots.Journal of applied physics,102(9),7.
MLA	Zhang, X. W.,et al."Anisotropic zeeman splitting and stark shift of in(1-y)mn(y)as(1-x)n(x) oblate quantum dots".Journal of applied physics 102.9(2007):7.

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