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
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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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