CHARACTERIZATION OF THE ELECTRONIC STATES NEAR THE CENTERS OF THE LANDAU BANDS UNDER QUANTUM HALL CONDITIONS

被引：52

作者：

HUCKESTEIN, B

KRAMER, B

SCHWEITZER, L

机构：

[1] Physikalisch-Technische Bundesanstalt, 3300 Braunschweig

来源：

SURFACE SCIENCE | 1992年 / 263卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(92)90320-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The properties of the states near the centres of the Landau bands in disordered two-dimensional systems are investigated with respect to their asymptotic and fractal behaviour. It is shown that they can be described by a one-parameter scaling law close to the centres of the bands where the localization length diverges with an exponent nu = 2.35 +/- 0.03. Universality with respect to the range of the random potential is explicitly demonstrated. Furthermore, the states have a multifractal character with a log-normal distribution of the amplitudes.

引用

页码：125 / 128

页数：4

共 20 条

[1] FINITE-SIZE SCALING STUDY OF LOCALIZATION IN LANDAU-LEVELS [J].