Volume 60, Number 6, December 2002
|Page(s)||889 - 895|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 December 2002|
Coupling sensitivity of localization length in one-dimensional disordered systems
Department of Physics, University of Potsdam
Postfach 601553, D-14415 Potsdam, Germany
Accepted: 7 October 2002
We investigate Anderson localization in a quasi–one-dimensional disordered system consisting of weakly coupled statistically independent channels. The dependence of the localization length on the coupling κ is shown to be singular: proportional to . Numerical evidence is given for coupled random chains with different statistics of site potential. An analytical approach is developed based on the Fokker-Planck treatment of the coupled stationary Schrödinger equations with Gaussian delta-correlated potentials.
PACS: 72.15.Rn – Localization effects (Anderson or weak localization)
© EDP Sciences, 2002
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