The two-dimensional Anderson model of localization with random hopping

被引：0

作者：

A. Eilmes

R.A. Römer

M. Schreiber

机构：

[1] Department of Computational Methods in Chemistry,

[2] Jagiellonian University,undefined

[3] 30-060 Kraków,undefined

[4] Poland,undefined

[5] Institut für Physik,undefined

[6] Technische Universität Chemnitz,undefined

[7] 09107 Chemnitz,undefined

[8] Germany,undefined

来源：

The European Physical Journal B - Condensed Matter and Complex Systems | 1998年 / 1卷

关键词：

PACS. 72.15.Rn Quantum localization - 71.30.+h Metal-insulator transitions and other electronic transitions;

D O I：

暂无

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学科分类号：

摘要：

We examine the localization properties of the 2D Anderson Hamiltonian with off-diagonal disorder. Investigating the behavior of the participation numbers of eigenstates as well as studying their multifractal properties, we find states in the center of the band which show critical behavior up to the system size \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}\end{document} considered. This result is confirmed by an independent analysis of the localization lengths in quasi-1D strips with the help of the transfer-matrix method. Adding a very small additional onsite potential disorder, the critical states become localized.

引用

页码：29 / 38

页数：9