Size-dependent analysis of the metal-insulator transition in the integral quantum hall effect

authored by

S. Koch, R. J. Haug, K. V. Klitzing, K. Ploog

Abstract

The critical exponent of the localization length in the integral quantum Hall regime can be measured directly using the Hall-bar geometries with different sizes. We obtain a universal behavior for the three lowest Landau levels. This is in agreement with the universality prediction of the field-theoretic approach to the metal-insulator transition in the quantum Hall effect. The value of =2.30.1 agrees with recent numerical studies for the lowest Landau level. The measured value of the temperature exponent of the inelastic-scattering rate is found to range from p=2.70.3 to p=3.40.4.

External Organisation(s)

Max Planck Institute for Solid State Research (MPI-FKF)

Type

Article

Journal

Physical review letters

Volume

67

Pages

883-886

No. of pages

4

ISSN

0031-9007

Publication date

01.01.1991

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

https://doi.org/10.1103/PhysRevLett.67.883 (Access: Unknown)