New superconducting and magnetic phases emerge on the magnetic criticality in CeIn3

S. Kawasaki, T. Mito, Y. Kawasaki, H. Kotegawa, G. Q. Zheng, Y. Kitaoka, H. Shishido, S. Araki, R. Settai, Y. Onuki

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

We report the discovery of new superconducting and novel magnetic phases in CeIn3 on the verge of antiferromagnetism (AFM) under pressure (P) through the In-nuclear quadrupole resonance (NQR) measurements. We have found a P-induced phase separation of AFM and paramagnetism (PM) without any trace of a quantum phase transition in CeIn3. A new type of superconductivity (SC) was found, under P = 2.28-2.5 GPa, to coexist with AFM. It is magnetically separated from PM where the heavy fermion SC takes place. We propose that the magnetic excitations such as spin-density fluctuations induced by the first-order magnetic phase transition might mediate attractive interaction to form Cooper pairs.

Original languageEnglish
Pages (from-to)1647-1650
Number of pages4
Journaljournal of the physical society of japan
Volume73
Issue number7
DOIs
Publication statusPublished - Jul 1 2004
Externally publishedYes

Keywords

  • CeIn
  • First-order phase transition
  • Heavy fermion
  • NQR
  • Pressure
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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