Conductance fluctuations and single-parameter scaling in two-dimensional disordered systems

J. Prior, A. M. Somoza, and M. Ortuño
Phys. Rev. B 72, 024206 – Published 14 July 2005

Abstract

We have studied numerically the fluctuations of the conductance, g, and the applicability of single parameter scaling in two-dimensional disordered noninteracting systems. We have checked that the variance of lng varies with the lateral sample size as L23. In agreement with this, we have introduced a parameter to establish the applicability of the single-parameter scaling (SPS) hypothesis. We have found that SPS is satisfied in two-dimensional systems, except for the fluctuation states in the band tails, where a second parameter is needed.

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  • Received 8 February 2005

DOI:https://doi.org/10.1103/PhysRevB.72.024206

©2005 American Physical Society

Authors & Affiliations

J. Prior, A. M. Somoza, and M. Ortuño

  • Departamento de Física, Universidad de Murcia, Murcia 30.071, Spain

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Vol. 72, Iss. 2 — 1 July 2005

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