Superconductivity in the Presence of Strong Pauli Paramagnetism: CeCu2Si2

F. Steglich, J. Aarts, C. D. Bredl, W. Lieke, D. Meschede, W. Franz, and H. Schäfer
Phys. Rev. Lett. 43, 1892 – Published 17 December 1979
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Abstract

A comparison was made between four low-temperature properties of LaCu2Si2 and CeCu2Si2. Whereas LaCu2Si2 behaves like a normal metal, CeCu2Si2 shows (i) low-temperature anomalies typical of "unstable 4f shell" behavior and (ii) a transition into a superconducting state at Tc0.5 K. Our experiments demonstrate for the first time that superconductivity can exist in a metal in which many-body interactions, probably magnetic in origin, have strongly renormalized the properties of the conduction-electron gas.

  • Received 10 August 1979

DOI:https://doi.org/10.1103/PhysRevLett.43.1892

©1979 American Physical Society

Authors & Affiliations

F. Steglich

  • Institut für Festkörperphysik, Technische Hochschule Darmstadt, D-6100 Darmstadt, West Germany

J. Aarts, C. D. Bredl, W. Lieke, D. Meschede, and W. Franz

  • II. Physikalisches Institut, Universität zu Köln, D-5000 Köln 41, West Germany

H. Schäfer

  • Eduard-Zintl-Institut, Technische Hochschule Darmstadt, D-6100 Darmstadt, West Germany

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Issue

Vol. 43, Iss. 25 — 17 December 1979

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