Classical limit for electronic disordered systems: spectral tails and thermodynamical properties

摘要

We consider the classical limit for the density of states of an electron in a disordered one-dimensional chain. The low energy tail of the density of states is analytically studied and we evaluate the thermodynamical properties of this system. For the Boltzmann distribution the heat capacity grows when disorder increases. On the other hand in the quantum case, corresponding to the Fermi-Dirac statistic, the heat capacity diminishes when disorder increases. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. [References: 23]