Delocalization in the 1D Anderson model with long-range correlated disorder

被引：410

作者：

de Moura, FABF ^{[1
]}

Lyra, ML ^{[1
]}

机构：

[1] Univ Fed Alagoas, Dept Fis, BR-57072970 Maceio, AL, Brazil

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.81.3735

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the nature of electronic states in a tight-binding one-dimensional model with the on-site energies exhibiting long-range correlated disorder and nonrandom hopping amplitudes. The site energies describe the trace of a fractional Brownian motion with a specified spectral density S(k) proportional to 1/k(alpha). Using a renormalization group technique, we show that for long-range correlated energy sequences with persistent increments (alpha > 2) the Lyapunov coefficient (inverse localization length) vanishes within a finite range of energy values revealing the presence of an Anderson-like metal-insulator transition. [S0031-9007(98)07502-4].

引用

页码：3735 / 3738

页数：4

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