Self-consistent current relaxation theory for the electron localization problem |
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| Authors: | D Belitz A Gold W Götze |
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| Institution: | (1) Physik-Department, Technische Universität München, James-Franck-Strasse, D-8046 Garching bei München, Federal Republic of Germany;(2) Max Planck-Institut für Physik und Astrophysik, München, Federal Republic of Germany |
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| Abstract: | The self-consistent current relaxation theory for the Anderson transition is generalized to include quantum interference effects. The influence of long-ranged potential fluctuations as opposed to short-ranged ones is discussed and for dimensionalityd>2 a crossover for the dynamical conductivity from a regime with Wegner scaling to one with the scaling laws for classical percolation is found. Ford=2 an abrupt transition from strong to extremely weak localization is obtained. |
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