磁性纳米电机单电子晶体管的自旋输运特性  

Spin-polarized electron transport through a nanoelectromechanical single-electron-transistor

作　　者：王瑞强[1,2] 王伯根[1] 邢定钰[1] 

机构地区：[1]南京大学物理系南京微结构国家实验室,南京210093 [2]华南师范大学物理与电信工程学院广东省高等学校量子信息技术重点实验室,广州510006

出　　处：《物理》2009年第6期416-419,共4页Physics

基　　金：江苏省博士后科研资助计划(批准号:0802008C)资助项目

摘　　要：文章作者在研究磁性隧道结的自旋输运中引入量子点的机械振动自由度,将单电子隧穿和振动自由度耦合所导致的shuttle输运理论应用到自旋电子学中.研究结果表明,shuttle输运对自旋极化输运有很大的影响,其独特的输运性质可以用来设计自旋电子器件.文章在理论上提出具有巨磁效应的自旋阀、高性能的半导体自旋注入器以及电流的整流器.The concept of ＂shuttle transport＂ is introduced into the field of spintronics, and spin-dependent electron transport in magnetic tunnel junctions is studied by considering the coupling of the electronic and mechanical degrees of freedom. It is shown that shuttle transport plays an important role in spin-polarized transport, and can be applied to design spintronic elements. We suggest designs for a spin valve with giant magnetoresistance, a high performance spin injector for semiconductors, and a current diode.

关 键 词：可动量子点 自旋阀 自旋注入 整流效应 纳米电机系统 

分 类 号：O471.1[理学—半导体物理]