Interplay of superconductivity, antiferromagnetism, and pauli depairing in CeCoIn5

Carley Paulsen, Dai Aoki, Georg Knebel, Jacques Flouquet

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9 Citations (Scopus)

Abstract

Low temperature magnetization M measurements down to 70 mK have been performed through the superconducting upper critical field Hc2 of CeCoIn5 with the field H parallel to the c-axis of the tetragonal crystal. The crossing through the upper critical field Hc2(0) is marked by a sign change in the temperature dependence of M(T). A Fermi liquid law of the magnetization is observed in the superconducting phase while in the paramagnetic state above Hc2 a quasi-linear temperature dependence is obeyed. The specific heat below Hc2 is therefor dominated by the increase of y(H), the linear term of the specific heat, and is marked by a singularity at Hc2(0). No indication of the so called Q-phase was observed below Hc2 (in contrast to the case with H applied in the basal plane).

Original languageEnglish
Article number053701
Journaljournal of the physical society of japan
Volume80
Issue number5
DOIs
Publication statusPublished - 2011 May 1
Externally publishedYes

Keywords

  • CeCoIn
  • Magnetization measurements
  • Quantum criticality
  • Upper critical field

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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