%0 Journal Article
%T Electron transport in multi-terminal quantum chain systems based on the Green''''s functions<br>基于格林函数的多终端量子链状体系电子输运性质的研究
%A Dai Zhen-Hong
%A Ni Jun
%A <br>戴振宏
%A 倪 军
%J 物理学报
%D 2005
%I 
%X We have introduced a method for the calculation of electron transport in a multi_terminal quantum system based on the recursive Green's function technique. The corresponding transport equation is presented by scattering matrix, which is expressed by Green's function. Using this method, the multi_terminal device can be simplified as a standard two_terminal device, which is convenient in treating the mesoscopic device. It is found that the transmission and reflection probabilities of the two multi_terminal quantum systems show complex spectra. The results show that the special node can destroy the symmetrical conductance spectra, and there is a new conductance peak in the low_energy region. This method can also be applied to the study of electron transport of complex mesoscopic structures.
%K Green's function
%K scattering matrix
%K quantum system<br>格林函数
%K 电子输运性质
%K 多终端
%K 链状
%K 电子输运特性
%K 量子体系
%K 输运方程
%K 技术计算
%K 电导方程
%K 递归方法
%K 计算结果
%K 吸附结构
%K 矩阵和
%K 谱结构
%K 对称性
%K 一维链
%K 传输谱
%K 低能量
%K 介观
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=09FCCE4965B517FA&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=DF92D298D3FF1E6E&sid=72BC3B6FFD4E2FA8&eid=D3D464E0F6BEA0B6&journal_id=1000-3290&journal_name=物理学报&referenced_num=7&reference_num=21