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Spin filtering magnetic modulation and spin-polarization switching in hybrid ferromagnet/semiconductor structures |
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| Authors: | HuaiZhe Xu LiYing Wang QiQi Yan YaPing Zhang ShiChao Zhang |
| Institution: | 1. State Key Laboratory of Software Development Environment and Department of Physics, Beihang University, Beijing, 100191, China 2. Faculty of Engineering, The University of Nottingham Ningbo, Ningbo, 315100, China 3. School of Materials Science and Engineering, Beihang University, Beijing, 100191, China |
| Abstract: | 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 multiplevalue logic devices. |
| Keywords: | spin-dependent transport spin polarization switch magnetic manipulation spin filter |
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