μSR Studies on Heavy Fermion Superconductors CeIrIn 5 and CeCoIn 5

Wataru Higemoto, Akihiro Koda, Ryosuke Kadono, Yu Kawasaki, Yoshinori Haga, Dai Aoki, Rikio Settai, Hiroaki Shishido, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

We report that the muon spin relaxation rate under zero-external field in the heavy-fermion compound CeTrIn 5 (Tr=Ir, Co) is independent of temperature down to 20mK, demonstrating the absence of magnetism due to long-range magnetic order and/or to the breakdown of time-reversal symmetry in the superconducting state. The magnetic penetration depth deduced by the muon spin relaxation rate under a transverse field is λ ∼ 6700 Å for CeIrIn 5 at 402 G and ∼5500 Å for CeCoIn 5 at 3 kG.

Original languageEnglish
Pages (from-to)1023-1026
Number of pages4
Journaljournal of the physical society of japan
Volume71
Issue number4
DOIs
Publication statusPublished - 2002 Apr
Externally publishedYes

Keywords

  • CCoIn
  • CeIrIn
  • Heavry fermion superconductor
  • μSR

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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