Study of off-diagonal disorder using the typical medium dynamical cluster approximation

被引：24

作者：

Terletska, H. ^{[1
,2
]}

Ekuma, C. E. ^{[1
,2
]}

Moore, C. ^{[1
,2
]}

Tam, K. -M. ^{[1
,2
]}

Moreno, J. ^{[1
,2
]}

Jarrell, M. ^{[1
,2
]}

机构：

[1] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[2] Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 09期

基金：

美国国家科学基金会;

关键词：

METAL-INSULATOR-TRANSITION; ANDERSON LOCALIZATION; SCALING THEORY; COHERENT; ABSENCE; MODEL; DIFFUSION; STATES;

D O I：

10.1103/PhysRevB.90.094208

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We generalize the typical medium dynamical cluster approximation and the local Blackman, Esterling, and Berk method for systems with off-diagonal disorder. Using our extended formalism we perform a systematic study of the effects of nonlocal disorder-induced correlations and off-diagonal disorder on the density of states and the mobility edge of the Anderson localized states. We apply our method to the three-dimensional Anderson model with configuration-dependent hopping and find fast convergence with modest cluster sizes. Our results are in good agreement with the data obtained using exact diagonalization and the transfer-matrix and kernel polynomial methods.

引用

页数：11

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