The superconducting gap structure of PrOs4 Sb12 and CeRu2 probed by C (H, φ{symbol})

J. Custers*, A. Yamada, T. Tayama, T. Sakakibara, H. Sugawara, Y. Aoki, H. Sato, Y. Onuki, K. Machida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We have performed measurements of the angle-resolved specific heat C (H, φ{symbol}) on PrOs4 Sb12 and the well-known s-wave superconductor CeRu2 in order to gain information about their respective superconducting (SC) gap structure. PrOs4 Sb12 exhibits pronounced minima (maxima) in C (H, φ{symbol}) along the [1 0 0] ([1 1 1]) directions. CeRu2 shows minima (maxima) along the [1 1 0] ([1 0 0]) directions. The field dependence of the oscillation amplitude of C (φ{symbol}), | A |, shows similar behavior for both suggesting finite minima in the SC gap, where C (φ{symbol}) is smallest. On the other hand, in comparison the temperature dependence of | A | shows aberrant behavior.

Original languageEnglish
Pages (from-to)700-702
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 1
DOIs
StatePublished - 2007/03

Keywords

  • Anisotropic superconductivity
  • CeRu
  • PrOs Sb
  • Specific heat
  • Unconventional superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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