Hopping conduction in the Landau level tails in GaAs-AlxGa1-xAs heterostructures at low temperatures

G. Ebert, K. von Klitzing, C. Probst, E. Schuberth, K. Ploog, G. Weimann

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105 Scopus citations

Abstract

We have investigated the temperature dependence of the transverse conductivity σxx in the two-dimensional Shubnikov-de Haas oscillation minima in GaAs-AlxGa1-xAs heterostructures at temperatures between 10mK and 1 K. We found that for σxx ≪ σxx (max), where σxx (max) is the conductivity in the corresponding oscillation maxima, the results agree qualitatively with a theory recently published by Ono, predicting σxx ∝ (1/T) exp - (T0/T) 1 2, but are not consistent with the estimated T0-values.

Original languageEnglish
Pages (from-to)625-628
Number of pages4
JournalSolid State Communications
Volume45
Issue number7
DOIs
StatePublished - Feb 1983
Externally publishedYes

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