%0 Journal Article
%T Effect of External Magnetic Field on the Spin-Dependent Transport and Shot Noise of a Ferromagnetic/Semiconductor/Ferromagnetic Heterojunction with Double δ Tunnel Barrier<br>外加磁场对含双δ势垒的铁磁/半导体/铁磁异质结中自旋输运和散粒噪声的影响
%A Du Jian
%A Li Zhiwen
%A Zhang Peng
%A <br>杜坚
%A 李志文
%A 张鹏
%J 半导体学报
%D 2008
%I 
%X 研究了外磁场存在时,含双δ势垒的铁磁/半导体/铁磁异质结中自旋相关的透射概率和散粒噪声,讨论了量子尺寸效应和Rashba自旋轨道耦合效应.研究结果表明:不同自旋取向的电子隧穿异质结时,透射概率和散粒噪声随半导体长度的变化特性是作等幅振荡;外加磁场和Rashba自旋轨道耦合强度的增强都会加大透射概率和散粒噪声的振荡频率;外加磁场角度的改变会改变散粒噪声的振荡频率;双δ势垒的存在增大了自旋电子透射概率的振幅.
%K double tunnel barrier
%K ferromagnetic/semiconductor/ferromagnetic heterojunction
%K Rashba spin-orbit coupling
%K transmission coefficient
%K shot noise<br>势垒
%K 铁磁/半导体/铁磁异质结
%K Rashba自旋轨道耦合效应
%K 透射概率
%K 散粒噪声
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=4B006E346E2F143D5D75C8C2FEBE9DB9&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=B31275AF3241DB2D&sid=008520E0B52E94B3&eid=D291DCA663E1D24D&journal_id=1674-4926&journal_name=半导体学报&referenced_num=0&reference_num=20