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Thermoelectric Transport at the Metal-Insulator Transition in Disordered Systems

This dissertation demonstrates the behavior of the electronic
transport properties in the presence of a temperature gradient in
disordered systems near the metal-insulator transition. In
particular, we first determine the d.c. conductivity, the
thermopower, the thermal conductivity, the Lorenz number, the figure
of merit, and the specific heat of a three-dimensional Anderson model
of localization by two phenomenological approaches. Then we also compute
the d.c. conductivity, the localization length and the Peltier
coefficient in one dimension by a new microscopic approach based on
the recursive Green's functions method. A fully analytic study is
difficult, if not impossible, due to the problem of treating the
intrinsic disorder in the model, as well as, incorporating a
temperature gradient in the Hamiltonian. Therefore, we resort to
various numerical methods to investigate the problem.

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:17729
Date12 June 2001
CreatorsVillagonzalo, Cristine
ContributorsTechnische Universität Chemnitz
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typedoc-type:doctoralThesis, info:eu-repo/semantics/doctoralThesis, doc-type:Text
Rightsinfo:eu-repo/semantics/openAccess

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