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	A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors
	Liu Gui-Bin; Liu Bang-Gui1
刊名	Chinese physics b
	2009-11-01
卷号	18期号:11页码:5047-5054
关键词	Diluted magnetic semiconductor Green's function Ruderman-kittel-kasuya-yosida
ISSN号	1674-1056
通讯作者	Liu bang-gui(bgliu@aphy.iphy.ac.cn)
英文摘要	We study (ga, mn)as diluted magnetic semiconductors in terms of the ruderman-kittel-kasuya-yosida quantum spin model in green's function approach. random distributions of the magnetic atoms are treated by using an analytical average of magnetic configurations. average magnetic moments and spin excitation spectra as functions of temperature can be obtained by solving self-consistent equations, and the curie temperature t(c) is given explicitly. t(c) is proportional to magnetic atomic concentration, and there exists a maximum for t(c) as a function of carrier concentration. applied to (ga, mn)as, the theoretical results are consistent with experiment and the experimental t(c) can be obtained with reasonable parameters. this modelling can also be applied to other diluted magnetic semiconductors.
WOS关键词	MAGNETOTRANSPORT PROPERTIES ; TRANSPORT-PROPERTIES ; EXCHANGE INTERACTION ; CURIE-TEMPERATURE ; 1ST PRINCIPLES ; (GA,MN)AS ; MN ; ZN1-XCRXTE ; GAMNAS ; FILMS
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000271631200073
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373708
专题	物理研究所
通讯作者	Liu Bang-Gui
作者单位	1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 2.Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu Gui-Bin,Liu Bang-Gui. A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors[J]. Chinese physics b,2009,18(11):5047-5054.
APA	Liu Gui-Bin,&Liu Bang-Gui.(2009).A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors.Chinese physics b,18(11),5047-5054.
MLA	Liu Gui-Bin,et al."A green's function model for ferromagnetism and spin excitations of (ga, mn)as diluted magnetic semiconductors".Chinese physics b 18.11(2009):5047-5054.

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