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arXiv · cond-mat/9903246

On the thermal broadening of a quantum critical phase transition

P. T. Coleridge·P. Zawadzki
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Abstract

The temperature dependence of an integer Quantum Hall effect transition is studied in a sample where the disorder is dominated by short-ranged potential scattering. At low temperatures the results are consistent with a $(T/T_0)^κ$ scaling behaviour and at higher temperatures by a linear dependence similar to that reported in other material systems. It is shown that the linear behaviour results from thermal broadening produced by the Fermi-Dirac distribution function and that the temperature dependence over the whole range depends only on the scaling parameter T$_0^κ$.

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P. T. Coleridge, P. Zawadzki. 1999-03-16. On the thermal broadening of a quantum critical phase transition. https://doi.org/10.1016/s0038-1098(99)00346-4

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