在线阅读 --自然科学版 2011年3期《四终端铁磁/半导体/铁磁异质结的自旋输运性质》
四终端铁磁/半导体/铁磁异质结的自旋输运性质--[在线阅读]
王素新1,2, 李春光2, 景君梅3, 杜坚2
1. 河北师范大学物理科学与信息工程学院, 河北石家庄 050016;
2. 河北民族师范学院物理系, 河北承德 067000;
3. 承德翠桥学校, 河北承德 067000
起止页码: 254--258,278页
DOI:
摘要
提出了含有δ势垒的四终端铁磁/半导体/铁磁异质结模型,研究了该模型透射概率的性质.结果表明:透射概率随半导体长度的增加产生周期性振荡,且与δ势垒强度及电子的自旋方向相关,Rashba自旋轨道耦合强度、外磁场对透射概率均有影响.

On Spin Transport Properties of the Four-terminal Ferromagnetic/semiconductor/ferromagnetic Heterjunction
WANG Suxin1,2, LI Chunguang2, JING Junmei3, DU Jian2
1. College of Physics Science and Information Engineering, Hebei Normal University, Hebei Shijiazhuang 050016, China;
2. Department of Physics, Hebei Normal College for Nationalities, Hebei Chengde 067000, China;
3. Chengde Cuiqiao School, Hebei Chengde 067000, China
Abstract:
A model of four-terminal ferromagnetic/ semiconductor/ferromagnetic heterjunction containing δ barrier is proposed.The results indicate that the transmission probability makes periodic oscillation with the length of the semiconductor increasing.It is related to the barrier together with the electron spin orientation.Moreover,Rashba spin-orbit interaction as well as the strength and the direction of external magnetic field also have influence on the transmission probability.

收稿日期: 2010-12-6
基金项目: 河北省自然科学基金(A2009000240);河北省薄膜实验室开放课题重点课题

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