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Microscopic Derivation of the Ginzburg–Landau Equations for the Periodic Anderson Model in the Coexistence Phase of Superconductivity and Antiferromagnetism

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Abstract

On the basis of the periodic Anderson model, the microscopic Ginzburg–Landau equations for heavy-fermion superconductors in the coexistence phase of superconductivity and antiferromagnetism have been derived. The obtained expressions are valid in the vicinity of quantum critical point of heavy-fermion superconductors when the onset temperatures of antiferromagnetism and superconductivity are sufficiently close to each other. It is shown that the formation of antiferromagnetic ordering causes a decrease of the critical temperature of superconducting transition and order parameter in the phase of coexisting superconductivity and antiferromagnetism.

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Acknowledgments

This work was supported in part by the Russian Foundation for Basic Research, Grant No. 13-02-00523 and regional Grant Siberia No. 15-42-04372. A.O.Z. acknowledges the support of RF Presidential Grant No. SP-1370.2015.5.

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Correspondence to A. O. Zlotnikov.

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Val’kov, V.V., Zlotnikov, A.O. Microscopic Derivation of the Ginzburg–Landau Equations for the Periodic Anderson Model in the Coexistence Phase of Superconductivity and Antiferromagnetism. J Low Temp Phys 185, 439–445 (2016). https://doi.org/10.1007/s10909-015-1410-y

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  • DOI: https://doi.org/10.1007/s10909-015-1410-y

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