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arxiv: cond-mat/0011383 · v1 · submitted 2000-11-22 · ❄️ cond-mat.str-el

Superconductivity in the Kondo lattice: a mean-field approach

M. A. Gusmao (Universidade Federal do Rio Grande do Sul , Brazil) , A. A. Aligia (Centro Atomico Bariloche , Argentina) This is my paper
classification ❄️ cond-mat.str-el
keywords kondolatticetemperatureapproachapproximationbardeen-cooper-schrieffercalculatecoupling
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We calculate the superconducting critical temperature T_c and the Kondo temperature T_K of the Kondo lattice, decoupling the Kondo exchange interaction in the unrestricted Hartree-Fock (HF) Bardeen-Cooper-Schrieffer (BCS) approximation. We obtain that both T_K and T_c have an exponential dependence in the Kondo coupling J_K. For optimum doping and realistic parameters, both temperatures fall in the experimentally observed range.

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