Tunneling and Universality in the Integer Quantum Hall Effect

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We show analytically and numerically that omission of quantum interference from the Chalker-Coddington model of the integer quantum Hall effect gives a localization length exponent nu=4/3 as in ordinary two-dimensional percolation. Thus, contrary to semi-classical scaling arguments, tunneling alone does not lead to nu=7/3.
4 pages, LaTeX, 4 figures, Postscript

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/151816

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9706066
 http://arxiv.org/abs/cond-mat/9706066

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arXiv