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.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa.de:swb:ch1-200100602 |
| Date | 13 July 2001 |
| Creators | Villagonzalo, Cristine |
| Contributors | TU Chemnitz, Fakultät für Naturwissenschaften |
| Publisher | Universitätsbibliothek Chemnitz |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:doctoralThesis |
| Format | application/pdf, application/postscript, text/plain, application/zip |
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