PRUSCHKE, T and COX, DL and JARRELL, M (1993) TRANSPORT-PROPERTIES OF THE INFINITE-DIMENSIONAL HUBBARD-MODEL. EUROPHYSICS LETTERS, 21 (5). pp. 593-598. ISSN 0295-5075,
Full text not available from this repository.Abstract
Results for the optical conductivity and resistivity of the Hubbard model in infinite spatial dimensions are presented. At half-filling we observe a gradual crossover from a metal with a Drude peak at omega = 0 in the optical conductivity to an insulaltor as a function of U for temperatures above the antiferromagnetic phase transition. When doped, the <<insulator>> becomes a Fermi liquid with a corresponding temperature dependence of the optical conductivity and resistivity. We find a T2-coefficient in the low-temperature resistivity which suggests that the carriers in the system acquire a considerable mass-enhancement due to the strong local correlations. At high temperatures, a crossover into a semi-metallic regime takes place.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FALICOV-KIMBALL MODEL; STATE; THERMODYNAMICS; TEMPERATURE; FERMIONS; LATTICE; LIQUID; METAL-INSULATOR TRANSITIONS; ELECTRONIC CONDUCTION IN METALS AND ALLOYS; CONDUCTIVITY PHENOMENA IN SEMICONDUCTORS AND INSULATORS |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/54117 |
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