Multiple superconducting phases in heavy fermion superconductors

Y. Matsuda, K. Izawa, T. Watanabe, Y. Kasahara, Y. Nakajima, T. Sakakibara, C. J. Van Der Beek, M. Nohara, T. Hanaguri, H. Takagi, J. Goryo, K. Maki, P. Thalmeier, S. Osaki, H. Sugawara, H. Sato, H. Shishido, R. Settai, Y. Onuki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We show that in recently discovered heavy fermion superconductors, quasi two-dimensional CeCoIn5 and skutterudite PrOs4Sb 12, multiple superconducting phases with different symmetries manifest themselves below Tc. The ultrasound velocity measurements revealed that in CeCoIn5 the Fulde-Ferrel-Larkin-Ovchinikov phase, in which the order parameter is spatially modulated and has planar nodes aligned perpendicular to the vortices, appears at low temperature and high field. The angle resolved magnetothermal transport measurements revealed that in PrOs 4Sb12 a novel change in the symmetry of the superconducting gap function occurs deep inside the superconducting state. These results open up a new realm for the study of the superconductivity with multiple phases.

Original languageEnglish
Pages (from-to)1365-1369
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Issue number8-9
Publication statusPublished - Aug 2005
Externally publishedYes


  • D. Nuclear magnetic resonance

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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