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Anomalies in the characteristics of electronic structure upon a quantum phase transition to a state with two order parameters and the breaking of time-reversal symmetry

  • Proceedings of the Interdisciplinary Symposium “Ordering in Minerals and Alloys” OMA-18 and Proceedings of the International Interdisciplinary Symposium “Order, Disorder, and Properties of Oxides” ODPO-18
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Based on the periodic Anderson model, microscopic expressions for the Ginzburg–Landau expansion coefficients in a phase with superconducting and antiferromagnetic order parameters are obtained. Temperature dependences of the order parameters near the temperature of the transition to this phase are established. The emergence of anomalous properties upon the quantum phase transition to the phase with two order parameters is investigated. This transition is accompanied by drastic reconstruction of the density of states, reflected by the interplay between superconductivity and antiferromagnetism.

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Correspondence to V. V. Val’kov.

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Original Russian Text © V.V. Val’kov, A.O. Zlotnikov, 2016, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2016, Vol. 80, No. 6, pp. 683–686.

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Val’kov, V.V., Zlotnikov, A.O. Anomalies in the characteristics of electronic structure upon a quantum phase transition to a state with two order parameters and the breaking of time-reversal symmetry. Bull. Russ. Acad. Sci. Phys. 80, 616–619 (2016). https://doi.org/10.3103/S106287381606040X

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  • DOI: https://doi.org/10.3103/S106287381606040X

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