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Universal scaling and diagonal conductivity in the integral quantum Hall effect

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Gammel, B. M. ; Evers, Ferdinand
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Date of publication of this fulltext: 05 Jul 2021 05:40


We perform a numerical finite-size study for the static homogeneous diagonal conductivity σxx at the critical filling factor 3/2 for different microscopic realizations of the random impurity potential. The variation of σxx with the system size defines a scaling function. It turns out to be independent of the particular realization of disorder and also of the Landau-level index. However, the ...


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