Superconductivity of Ce-based heavy fermions under pressure: Valence fluctuation mediated pairing associated with valence instability of Ce

K. Miyake, O. Narikiyo, Y. Onishi

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

It is argued that the coincidence of peaks of the residual resistivity and the superconducting transition temperature observed in CeCu2Ge2 under pressure can be understood as a phenomenon of enhanced valence fluctuations associated with rapid valence change which is signaled by rapid decrease of the coefficient A of T2-term of the resistivity. A type of Cooper pairing predicted by this scenario can be different from that mediated by the antiferromagnetic spin fluctuations. The superconductivity observed in isostructural compounds, CeCu2Si2 and CeNi2Ge2, under pressure should be understood in parallel.

Original languageEnglish
Pages (from-to)676-677
Number of pages2
JournalPhysica B: Condensed Matter
Volume259-261
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Superconductivity of Ce-based heavy fermions under pressure: Valence fluctuation mediated pairing associated with valence instability of Ce'. Together they form a unique fingerprint.

  • Cite this