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Free energy and thermodynamical critical fieldH c (T) of a superconductor with crystalline-field-split magnetic impurities: (La/itPr)Sn3

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Abstract

An expression for the free energy of a superconductor containing magnetic impurities with crystalline-field-split energy levels is derived. It is used to calculate the thermodynamic critical fieldH c (T) of(La Pr)Sn 3 . ExperimentallyH c (T) is determined from measurements of the heat capacity of(LaPr)Sn 3 in the normal and superconducting states. The two results are in general agreement and demonstrate the role of the inelastic pair-breaking mechanism in this nonmagnetic ground-state system.

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Author notes

  1. M. B. Maple

    Present address: Institute of Physics, University of Campinas, Campinas, Brazil

Authors and Affiliations

  1. Fachbereich Physik, Universität Regensburg, Regensburg, Germany

    J. Keller & P. Holzer

  2. Institute for Pure and Applied Physical Sciences, University of California at San Diego, La Jolla, California

    R. W. McCallum, C. A. Luengo & M. B. Maple

  3. Brookhaven Laboratory, Upton, New York

    A. R. Sweedler

Authors
  1. J. Keller
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  2. P. Holzer
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  3. R. W. McCallum
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  4. C. A. Luengo
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  5. M. B. Maple
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  6. A. R. Sweedler
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Additional information

Supported by the U.S. Energy Research and Development Administration under Contract No. ERDA E(04-3)-34 PA 227.

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Keller, J., Holzer, P., McCallum, R.W. et al. Free energy and thermodynamical critical fieldH c (T) of a superconductor with crystalline-field-split magnetic impurities: (La/itPr)Sn3 . J Low Temp Phys 26, 357–363 (1977). https://doi.org/10.1007/BF00655415

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  • DOI: https://doi.org/10.1007/BF00655415

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