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28 March 2024
 
  » arxiv » cond-mat/0210019

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Magnetic Field Effects on the Transport Properties of One-sided Rough Wires
A. Garc’{i}a-Mart’{i}n ; M. Governale ; P. Wölfle ;
Date 1 Oct 2002
Subject Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall
AffiliationU. Karlsruhe
AbstractWe present a detailed numerical analysis of the effect of a magnetic field on the transport properties of a `small-$N$’ one-sided surface disordered wire. When time reversal symmetry is broken due to a magnetic field $B$, we find a strong increase with $B$ not only of the localization length $xi$ but also of the mean free path $ell$ caused by boundary states. Despite this, the universal relationship between $ell$ and $xi$ does hold. We also analyze the conductance distribution at the metal-insulator crossover, finding a very good agreement with Random Matrix Theory with two fluctuating channels within the Circular Orthogonal(Unitary) Ensemble in absence(presence) of $B$
Source arXiv, cond-mat/0210019
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