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	Spin filtering and spin-polarization reversal in multilayered ferromagnetic metal/semiconductor heterostructures
	Guo, Y ; Yu, XW ; Li, YX
	2010-05-06 ; 2010-05-06
关键词	2-DIMENSIONAL ELECTRON GASES QUANTUM-WELLS ORBIT INTERACTION INVERSION-LAYERS ROOM-TEMPERATURE INJECTION SEMICONDUCTOR BARRIER SPINTRONICS TRANSPORT Physics, Applied
中文摘要	We investigate spin-filtering effect in multilayered ferromagnetic (F)/semiconductor (S) heterostructures within the Landauer framework of ballistic transport. Spin-dependent transmission and polarization are calculated and analyzed for different magnetizations of three ferromagnetic layers in a F/S/F/F structure proposed in this work. The results indicate that in such a multilayered configuration and when the magnetizations of the middle and the right ferromagnetic layers are antiparallel, the transmission for spin-up and spin-down electrons can be separated, which is quite different from the transport properties in the F/S/F structure, where electrons of different spin orientations have exactly the same contributions to transmission if the magnetic moments of the two ferromagnetic layers are antiparallel. It is also shown that the F/S/F/F structure can have big values of the polarization than the F/S/F structure. The quantum size effect of the length of the middle ferromagnetic layer and that of the semiconductor layer are discussed. Moreover, the polarization can be reversed when we switch the magnetizations of the middle and the right ferromagnetic layers. (c) 2005 American Institute of Physics.
语种	英语 ; 英语
出版者	AMER INST PHYSICS ; MELVILLE ; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15188]
专题	清华大学
推荐引用方式 GB/T 7714	Guo, Y,Yu, XW,Li, YX. Spin filtering and spin-polarization reversal in multilayered ferromagnetic metal/semiconductor heterostructures[J],2010, 2010.
APA	Guo, Y,Yu, XW,&Li, YX.(2010).Spin filtering and spin-polarization reversal in multilayered ferromagnetic metal/semiconductor heterostructures..
MLA	Guo, Y,et al."Spin filtering and spin-polarization reversal in multilayered ferromagnetic metal/semiconductor heterostructures".(2010).

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