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	Longitudinal spin transport in diluted magnetic semiconductor superlattices: the effect of the giant zeeman splitting
	Chang, K; Xia, JB; Peeters, FM
刊名	Physical review b
	2002-04-15
卷号	65期号:15页码:8
ISSN号	1098-0121
DOI	10.1103/physrevb.65.155211
通讯作者	Chang, k()
英文摘要	Longitudinal spin transport in diluted magnetic semiconductor superlattices is investigated theoretically. the longitudinal magnetoconductivity (mc) in such systems exhibits an oscillating behavior as function of an external magnetic field. in the weak magnetic-field region the giant zeeman splitting plays a dominant role that leads to a large negative magnetoconductivity. in the strong magnetic-field region the mc exhibits deep dips with increasing magnetic field. the oscillating behavior is attributed to the interplay between the discrete landau levels and the fermi surface. the decrease of the mc at low magnetic field is caused by the s-d exchange interaction between the electron in the conduction band and the magnetic ions. the spin polarization increases rapidly with increasing magnetic field and the longitudinal current becomes spin polarized in strong magnetic field. the effect of spin-disorder scattering on mc is estimated numerically for low magnetic fields and found to be neglectible for our system.
WOS关键词	ENVELOPE-FUNCTION APPROXIMATION ; QUANTUM-WELLS ; CONDUCTION ELECTRONS ; BAND-STRUCTURE ; SUPER-LATTICE ; INJECTION ; MAGNETORESISTANCE ; HETEROSTRUCTURE ; SCATTERING
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
语种	英语
出版者	AMERICAN PHYSICAL SOC
WOS记录号	WOS:000175147100072
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2429187
专题	半导体研究所
通讯作者	Chang, K
作者单位	1.Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 2.Univ Antwerpen UIA, Dept Natuurkunde, B-2610 Antwerp, Belgium
推荐引用方式 GB/T 7714	Chang, K,Xia, JB,Peeters, FM. Longitudinal spin transport in diluted magnetic semiconductor superlattices: the effect of the giant zeeman splitting[J]. Physical review b,2002,65(15):8.
APA	Chang, K,Xia, JB,&Peeters, FM.(2002).Longitudinal spin transport in diluted magnetic semiconductor superlattices: the effect of the giant zeeman splitting.Physical review b,65(15),8.
MLA	Chang, K,et al."Longitudinal spin transport in diluted magnetic semiconductor superlattices: the effect of the giant zeeman splitting".Physical review b 65.15(2002):8.

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