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Published July 29, 1985 | Published
Journal Article Open

Critical behavior of the Hall conductivity at the metal-insulator transition

Abstract

We measure the low-temperature longitudinal and Hall conductivities in a series of Ge:Sb samples at the approach to the metal-insulator transition. Both conductivities critically vanish with the same exponent of 1, in contradiction to the ratio of 2 predicted by the scaling theory of localization.

Additional Information

© 1985 The American Physical Society. Received 6 May 1985. We would like to thank H. Fritzsche both for supplying the samples and his active interest and advice. We have benefitted from discussions with E. Abrahams and P. A. Lee. This work was supported by the National Science Foundation under Grant No. DMR 83-05065. One of us (T.F.R.) acknowledges receipt of an Alfred P. Sloan fellowship.

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Published - PhysRevLett.55.522.pdf

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