铁磁/绝缘体/铁磁隧道结中的自旋流  

Spin Current in the Ferromagnet/Insulator/Ferromagnet Tunnel Junction

作　　者：王珏[1] 陆红霞[2] 

机构地区：[1]淮阴师范学院电子与电气工程系,江苏淮安223300 [2]淮阴师范学院物理系,江苏淮安223300

出　　处：《淮阴师范学院学报（自然科学版）》2008年第2期122-125,共4页Journal of Huaiyin Teachers College;Natural Science Edition

摘　　要：考虑粗糙界面散射和自旋翻转,运用Slonczewsik模型,我们研究了铁磁/绝缘体/铁磁中的磁性隧穿,得到自旋电流密度表达式.在界面势垒比较低时,自旋电流受随粗糙界面散射和自旋翻转的强度改变明显.Considering the rough-scattering effect and spin-flip effect in the insulator, we investigate the spin current in a ferromagnet/insulator/ferromagnet （FM/I/FM） tunneling junction using Slonczewsik＇s model. An expression of spin current as a function of barrier height, interface roughness and spin-flip effect is obtained. In lower bartier case, it shows that the spin current is depended on the rough-scattering effect and spin-flip effect.

关 键 词：自旋电流 自旋翻转 粗糙界面散射 

分 类 号：O511[理学—低温物理]