铁磁半导体/半导体/铁磁半导体异质结中光子辅助量子输运特性  

Photon-assisted Quantum transport of the Electron Through Ferromagnetic Semiconductor/semiconductor/ferromagnetic Semiconductor Heterostructure

作　　者：程永喜[1] 聂一行[1] 

机构地区：[1]山西大学理论物理研究所,山西太原030006

出　　处：《山西大学学报（自然科学版）》2011年第4期612-616,共5页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金(10774094)

摘　　要：基于有效质量近似和Floquet理论,考虑自旋-轨道耦合和外场驱动作用下,研究铁磁半导体/半导体/铁磁半导体异质结中的量子输运特性.结果表明自旋-轨道相互作用不仅使自旋发生翻转,而且束缚态能级发生劈裂,从而使电导率中出现两个Fano共振峰.势阱两边的磁化强度以及两边磁化强度之间的夹角对自旋翻转和共振位置具有调制作用.Based on effective quality approximation and Floquet theory,the quantum transport of the electron through ferromagnetic semiconductor/semiconductor/ferromagnetic semiconductor heterostructure with the spin-orbit coupling and an applied oscillatory field were studied.It is find that spin-orbit coupling not only leads to spin flip,but also induces splitting of the bound state level in well,as a result two peaks of Fano resonance occur in conductivity.The magnetizations on both sides of the well and the angle between them can modulate the spin-flip and the resonance location.

关 键 词：自旋轨道耦合 半导体异质结 量子输运 

分 类 号：N55[自然科学总论]