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

Article

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

DOI  :  10.1103/PhysRevB.90.094208

来源: SCIE

【 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.

【 授权许可】

Free