Delocalization in one-dimensional tight-binding models with fractal disorder II: existence of mobility edge

被引:1
|
作者
Yamada, Hiroaki S. [1 ]
机构
[1] Yamada Phys Res Lab, Aoyama 5-7-14-205, Niigata 9502002, Japan
来源
EUROPEAN PHYSICAL JOURNAL B | 2016年 / 89卷 / 07期
关键词
RANGE CORRELATED DISORDER; DIAGONAL DISORDER; LOCALIZATION; SYSTEMS; TRANSITION; CHAINS; STATES;
D O I
10.1140/epjb/e2016-70113-8
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
In the previous work, we investigated the correlation-induced localization-delocalization transition (LDT) of the wavefunction at the band center (E = 0) in the one-dimensional tight-binding model with fractal disorder [H.S. Yamada, Eur. Phys. J. B 88, 264 (2015)]. In the present work, we study the energy (E not equal 0) dependence of the normalized localization length (NLL) and the delocalization of the wavefunction at different energy in the same system. The mobility edges in the LDT arise when the fractal dimension of the potential landscape is larger than the critical value depending on the disorder strength, which is consistent with the previous result. In addition, we present the distribution of individual NLL and Lyapunov exponents in the system with LDT.
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页数:8
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