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Metal-insulator transition in one-dimensional lattices with chaotic energy sequences

Abstract:

We study electronic transport through a one-dimensional array of sites by using a tight binding Hamiltonian, whose site-energies are drawn from a chaotic sequence. The correlation degree between these energies is controlled by a parameter regulating the dynamic Lyapunov exponent measuring the degree of chaos. We observe the effect of chaotic sequences on the localization length, conductance, conductance distribution and wave function, finding evidence of a metal-insulator transition (MIT) at a critical degree of chaos. The one-dimensional metallic phase is characterized by a Gaussian conductance distribution and exhibits a peculiar non-selfaveraging. © 2005 Elsevier B.V. All rights reserved.

Año de publicación:

2005

Keywords:

    Fuente:

    scopusscopus
    googlegoogle

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

      Áreas temáticas:

      • Física
      • Magnetismo
      • Ingeniería y operaciones afines

      Contribuidores:

      González J.A.González J.A.
      Rodríguez M.Rodríguez M.
      Ernesto Medina DaggerErnesto Medina Dagger
      Pinto R.A.Pinto R.A.