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Heavy-Fermion Superconductivity: Experimental Status Report

  • Conference paper
Theory of Heavy Fermions and Valence Fluctuations

Part of the book series: Springer Series in Solid-State Sciences ((SSSOL,volume 62))

Abstract

New observations are reported for the heavy-fermion superconductors CeCu2Si2, UBe13 and UPt3. These results are discussed with respect to the following issues: (i) the competition between different cooperative phenomena in CeCu2Si2; (ii) the question whether the whole Fermi surface contributes to the superconducting transition in the three compounds; (iii) the nature of the superconducting order parameter. Taking into account more published data for these systems, we can delineate the present status of the field: CeCu2Si2 behaves as a singlet superconductor with possibly anisotropic Cooper pairing. UPt3 appears to possess an anisotropic order parameter, either of the singlet or triplet type. No definite conclusions can yet be drawn for Ube13, mainly because its superconducting properties are severely modified by field and temperature dependences of the normal- state parameters.

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  1. Institut für Festkörperphysik, Technische Hochschule Darmstadt, D-6100, Darmstadt, Fed. Rep. of Germany

    F. Steglich

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  1. F. Steglich
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  1. Department of Physics, Tohoku University, Aramaki Aoba, Sendai, 980, Japan

    Tadao Kasuya  & Tetsuro Saso  & 

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Steglich, F. (1985). Heavy-Fermion Superconductivity: Experimental Status Report. In: Kasuya, T., Saso, T. (eds) Theory of Heavy Fermions and Valence Fluctuations. Springer Series in Solid-State Sciences, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82618-4_2

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