多个侧向链对横向量子线传输性质的调制  

Modulation of electron transport though the quantum wire by many side-coupled quantum chains

作　　者：孟海卫[1] 姜东涛[2] 戴振宏[1] 

机构地区：[1]烟台大学物理系介观物理研究中心,烟台264005 [2]吉林大学物理学院纳米材料的物性与应用系,长春130000

出　　处：《物理学报》2007年第2期1099-1104,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10404022)资助的课题~~

摘　　要：利用递推格林函数方法,研究了与多个量子点间无相互作用的量子链相耦合的横向量子线的电子输运特性,发现量子链上格点的个数NU与侧向无限或有限量子链个数N对横向量子线输运性质的不同调制规律.由计算可知,利用格林函数可以方便的对传输构型及传输链中的格点数进行调解,从而得到各种人为量子器件的输运性质.Transport through the quantum wire with many side-coupled quantum chains is investigated by using a recursive Green＇ s function technique. We obtained the modulation rules of the parameters N and Nv, which are the number of side-coupled quantum chain and the quantum-dot number of side-coupled quantum chain, respectively. The results show that the recursive Green＇ s function method not only can conveniently tune the model and the number of the quantum chain, but also can be applied to study the varied nanofabrication of quantum devices.

关 键 词：递推格林函数 无限链 有限链 电子输运 

分 类 号：O471[理学—半导体物理]