FRACTAL EIGENSTATES IN DISORDERED-SYSTEMS

被引：28

作者：

SCHREIBER, M

机构：

[1] Institut für Physikalische Chemie, Johannes-Gutenberg-Universität

来源：

PHYSICA A | 1990年 / 167卷 / 01期

关键词：

D O I：

10.1016/0378-4371(90)90052-T

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The wave functions of the non-interacting electrons in disordered systems described by a tight-binding model with site-diagonal disorder are investigated by means of the inverse participation ratio. The wave functions are shown to be fractal objects. In three-dimensional samples, a critical fractal dimension can be defined for the mobility edge in the band centre, which yields the mobility edge trajectory in the whole energy range in good agreement with previous calculations based on the investigation of the exponentially decaying transmission coefficient. © 1990.

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页码：188 / 198

页数：11

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