二维H型四终端量子点阵列的量子输运

J4 ›› 2014, Vol. 31 ›› Issue (5): 628-634.

二维H型四终端量子点阵列的量子输运

罗国忠

忻州师范学院物理系山西忻州 034000

收稿日期:2013-05-20 修回日期:2013-07-09 出版日期:2014-09-28 发布日期:2014-09-17
通讯作者: 罗国忠（1977--）山西忻州人，讲师，硕士，长期从事理论物理的研究。主要研究方向：介观输运 E-mail:luoguozhong2013@163.com

Quantum transport through a two-dimensional H-shaped quantum dot-array of four-terminal system

LUO Guozhong

Department of physics Xinzhou Teachers university， Xinzhou 034000 China

Received:2013-05-20 Revised:2013-07-09 Published:2014-09-28 Online:2014-09-17

摘要/Abstract

摘要： 利用一个基于紧束缚模型的散射区格点上能量波动的二终端系统的透射和反射系数的一般计算方法，然后提出了基于实空间格点的H型四终端量子点阵列的系统，将其转化成二终端量子点阵列模型去探讨，通过利用实空间格林函数，计算了H型四终端量子点阵列的透射率，研究其量子输运问题。

关键词: 介观物理；量子输运；传输矩阵；量子点阵列；H-型；四终端系统

Abstract: In the paper, It is presented that a general method to calculate various transmission coefficients for two-terminal systems based on tight-banding models with fluctuating on-site energies in the scattering region, then, A two-dimension H-shaped quantum dot array of four-terminal system based on real-space lattice models is presented，a problem of the quantum transport in a four-terminal system can be reformulated into a problem of the quantum transport in an effective two-terminal system and then be treated using a standard two-terminal method. By exploiting real-space Green’s functions, the transmission coefficients of four-terminal quantum dot array is calculated ,and its problem of quantum transport is treated.

Key words: mesoscopic physics；quantum transport；transfer matrix； quantum dot array；H-shape；four-terminal system；

中图分类号:

O488

罗国忠. 二维H型四终端量子点阵列的量子输运[J]. J4, 2014, 31(5): 628-634.

LUO Guozhong. Quantum transport through a two-dimensional H-shaped quantum dot-array of four-terminal system[J]. J4, 2014, 31(5): 628-634.

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