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The phase diagram of the multi-dimensional Anderson localization via analytic determination of Lyapunov exponents

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  • V. N. Kuzovkov
  • W. von Niessen

Abstract

The method proposed by the present authors to deal analytically with the problem of Anderson localization via disorder [J. Phys.: Condens. Matter 14, 13777 (2002)] is generalized for higher spatial dimensions D. In this way the generalized Lyapunov exponents for diagonal correlators of the wave function, 〈 ψ2n,m 〉, can be calculated analytically and exactly. This permits to determine the phase diagram of the system. For all dimensions D > 2 one finds intervals in the energy and the disorder where extended and localized states coexist: the metal-insulator transition should thus be interpreted as a first-order transition. The qualitative differences permit to group the systems into two classes: low-dimensional systems (2≤D ≤3), where localized states are always exponentially localized and high-dimensional systems (D≥ Dc=4), where states with non-exponential localization are also formed. The value of the upper critical dimension is found to be D0=6 for the Anderson localization problem; this value is also characteristic of a related problem – percolation. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2004

Suggested Citation

  • V. N. Kuzovkov & W. von Niessen, 2004. "The phase diagram of the multi-dimensional Anderson localization via analytic determination of Lyapunov exponents," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 42(4), pages 529-542, December.
    • Handle: RePEc:spr:eurphb:v:42:y:2004:i:4:p:529-542
    DOI: 10.1140/epjb/e2005-00011-1
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