模式耦合对量子线电子输运性质的影响  

The Effect of Mode Coupling on Electron Transport Characteristics in the Quantum Wires

作　　者：戴振宏[1] 孙金祚[1] 杨富民 

机构地区：[1]烟台大学薄膜器件与弱信号信息技术实验室,264005

出　　处：《固体电子学研究与进展》2000年第4期363-370,共8页Research & Progress of SSE

基　　金：山东省自然科学基金资助项目(ZD97N1)

摘　　要：利用一般传输矩阵方法 (Transfer matrix method)和耦合模传输矩阵方法 (Coupledmode transfer matrix method) ,分别计算了几种处于弹道区的非均匀边界形状量子线的电导 ,研究量子线通道相邻分段区域电子传输模式之间的耦合对电导的影响。结果表明 ,这种耦合对空腔结构量子线电子输运性质有重要影响 ,是研究非均匀边界形状量子线电导必须考虑的关键因素。Using the normal transfer matrix method and the coupled mode transfer matrix method, we calculate respectively the conductance for several quantum wires with differently shaped border and lying in ballistic region, study the effect of mode coupling on the conductance of quantum wires. It is shown that the mode coupling of adjacent regions can produce important influence upon the conductance of quantum wires with cavity constructions, therefore, it is a key factor which must be considered for solving the conductance of these shaped quantum wires.

关 键 词：弹道输运 量子线 二维电子气 

分 类 号：O471.1[理学—半导体物理]