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Spin-glass transition in a Kondo lattice with quenched disorder |
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| Authors: | M. N. Kiselev R. Oppermann |
| Affiliation: | 1. Institüt für Theoretische Physik, Universit?t Würzburg, D-97074, Würzburg, Germany 2. Russian Research Center Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia 3. Department of Physics, University of Oxford, OX1 3NP, Oxford, UK |
| Abstract: | We use the Popov-Fedotov representation of spin operators to construct an effective action for a Kondo lattice model with quenched disorder at finite temperatures. We study the competition between the Kondo effect and frozen spin order in Ising-like spin glass. We present the derivation of new mean-field equations for the spin-glass order parameter and analyze the effects of screening of localized spins by conduction electrons on the spin-glass phase transition. |
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