三终端量子环的透射概率和概率流密度  

Transmission Probability and Probability Current Density of Three-terminal Quantum Ring

作　　者：杜坚[1] 何温[2] 徐曼 

机构地区：[1]河北民族师范学院物理系,河北承德067000 [2]河北师范大学物理科学与信息工程学院,石家庄050016 [3]石家庄环境监测中心,石家庄050000

出　　处：《固体电子学研究与进展》2010年第4期499-502,533,共5页Research & Progress of SSE

基　　金：河北省教育厅自然科学研究指导项目(Z2008103)

摘　　要：透射概率和概率流密度随量子环增大都会发生振荡。δ势垒增强会使概率流密度在下臂中单调增,在上臂中单调减。AB磁通增强时,透射概率和概率流密度都会发生振荡。在一定条件下,上臂左右段概率流密度之间存在对称性。The transmission probability and probability current density show periodic variations as the quantum ring increases.In the upper arm,the probability current density increases as the δ barrier increases.However,the probability current density decreases as the δ barrier increases in the lower arm.The transmission probability and probability current density show periodic variations as the AB flux increases.The probability current density in the left part of the upper arm and that in the right part of the upper arm are symmetrical under certain condition

关 键 词：透射概率 概率流密度 量子环 RASHBA自旋轨道耦合 

分 类 号：O471.1[理学—半导体物理]