一维Anderson无序模型电子局域态

计算物理 ›› 1992, Vol. 9 ›› Issue (3): 267-273.

一维Anderson无序模型电子局域态

徐慧

中南工业大学应用物理系, 长沙 410083

收稿日期:1991-07-15 修回日期:1992-03-30 出版日期:1992-09-25 发布日期:1992-09-25

IN ONE-DIMENSIONAL DISORDERED

Xu Hui

Department of Physics, Central South University of Technology, ChangSha 410083

Received:1991-07-15 Revised:1992-03-30 Online:1992-09-25 Published:1992-09-25

摘要/Abstract

摘要： 本文应用一种新方法,得到了包括次近邻相互作用,且无序点阵从五百到一万的一维安德逊无序模型电子本征态。结果表明此模型的本征态随着无序点阵的增加均从扩展态变为局域态,且变化的快慢受系统无序度的影响。

关键词: 安德逊模型, 本征矢, 电子局域态

Abstract: A new method for solving directly a hermitian five diagonal matrix is applied in this paper. The electronic eigenvectors are obtained in one-dimensional Anderson disordered model with second-neighbour interaction and 500 to 10000 site points. The result shows the change of eigenvectors in this model from the extended state to the localized state with the increasing of site point and the change speed is affected by the degree of the system disorder.

Key words: Anderson model, eigenvector, localization of electron

徐慧. 一维Anderson无序模型电子局域态[J]. 计算物理, 1992, 9(3): 267-273.

Xu Hui. IN ONE-DIMENSIONAL DISORDERED[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1992, 9(3): 267-273.

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