Spin filtering magnetic modulation and spin-polarization switching in hybrid ferromagnet/semiconductor structures  

作　　者：XU HuaiZhe WANG LiYing YAN QiQi ZHANG YaPing ZHANG ShiChao 

机构地区：[1]State Key Laboratory of Software Development Environment and Department of Physics,Beihang University [2]Faculty of Engineering,The University of Nottingham Ningbo [3]School of Materials Science and Engineering,Beihang University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第6期1057-1062,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Basic Research Program of China(Grant No.2013CB934003);the State Key Laboratory of Software Development Environment(Grant No.SKLSDE-2013ZX-28)

摘　　要：Electron spin-polarization modulation with a ferromagnetic strip of in-plane magnetization is analyzed in a hybrid ferromagnet/semiconductor filter device.The dependencies of electron spin-polarization on the strip’s magnetization strength,width and position have been systematically investigated.A novel magnetic control spin-polarization switch is proposed by inserting a ferromagnetic metal(FM)strip eccentric in relation to off the center of the spin filter,which produces the first energy level spin-polarization reversal.It is believed to be of significant importance for the realization of semiconductor spintronics multiple-value logic devices.Electron spin-polarization modulation with a ferromagnetic strip of in-plane magnetization is analyzed in a hybrid ferromag- net/semiconductor filter device. The dependencies of electron spin-polarization on the strip＇s magnetization strength, width and position have been systematically investigated. A novel magnetic control spin-polarization switch is proposed by inserting a ferromagnetic metal （FM） strip eccentric in relation to off the center of the spin filter, which produces the first energy level spin-polarization reversal. It is believed to be of significant importance for the realization of semiconductor spintronics multi- ple-value logic devices.

关 键 词：spin-dependent transport spin polarization switch magnetic manipulation spin filter 

分 类 号：TN406[电子电信—微电子学与固体电子学]