A wide-angle spin filter based on graphene with Rashba coupling and exchange field |
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| Authors: | Qing-Ping Wu Xing-Dao He Zheng-Fang Liu |
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| Institution: | aSchool of Materials Science and Engineering, Nanchang University, Nanchang 330031, China;bSchool of Basic Science, East China Jiaotong University, Nanchang 330013, China;cSchool of Measuring and Optical Engineering, Nanchang Hangkong University, Nanchang 330063, China |
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| Abstract: | Spin precession formula is deduced in graphene with Rashba spin-orbit coupling (RSOC) and exchange field, which can control accurately the transmission of up-spin and down-spin electrons. And a wide-angle spin filter can be achieved by the combined effects of exchange field and RSOC. Further spin polarization can be observed, which increases with increasing RSOC or exchange field. |
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