DC- and AC-scaling of the integer quantum Hall effect in the presence of interactions

被引：17

作者：

Kuchar, F ^{[1
]}

Meisels, R

Dybko, K

Kramer, B

机构：

[1] Montanuniv Leoben, Inst Phys, A-8700 Leoben, Austria

[2] Univ Hamburg, Inst Theoret Phys 1, D-20355 Hamburg, Germany

来源：

EUROPHYSICS LETTERS | 2000年 / 49卷 / 04期

关键词：

D O I：

10.1209/epl/i2000-00174-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature and frequency dependence of the plateau-to-plateau transitions in the quantum Hall effect are investigated experimentally for up to 5 Landau bands. Features induced by Coulomb interaction and impurity scattering are identified in different regions of temperature, frequeucy and magnetic field. For DC, data are consistent with scaling exponents kappa = 0.2, 0.4, depending on whether or not Landau hands with different spin direction art degenerate. For AC (35 to 52 GHz), frequency-dominated behaviour is observed at hf > k(B)T.

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页码：480 / 486

页数：7

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