Evidence of point nodes in superconducting gap of borocarbide superconductor YNi2B2C

K. Kamata, K. Izawa, Y. Nakajima, Y. Matsuda, T. Watanabe, M. Nohara, H. Takagi, H. Takeya, K. Hirata, P. Thalmeier, K. Maki

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In order to determine the superconducting gap structure of the borocarbide superconductor YNi2B2C, we have measured the angular variation of the c-axis thermal conductivity κzz in magnetic field rotated within the ab-planes. A clear fourfold symmetry with narrow cusps was observed in the angular variation of κzz. These results provide a strong evidence that the gap function has point nodes which are located along the a- and b-axes of the crystal.

Original languageEnglish
Pages (from-to)185-186
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume388-389
DOIs
Publication statusPublished - May 1 2003
Externally publishedYes
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: Aug 20 2002Aug 27 2002

Keywords

  • Borocarbides
  • Superconducting gap structure
  • Thermal conductivity

ASJC Scopus subject areas

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

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    Kamata, K., Izawa, K., Nakajima, Y., Matsuda, Y., Watanabe, T., Nohara, M., Takagi, H., Takeya, H., Hirata, K., Thalmeier, P., & Maki, K. (2003). Evidence of point nodes in superconducting gap of borocarbide superconductor YNi2B2C. Physica C: Superconductivity and its applications, 388-389, 185-186. https://doi.org/10.1016/S0921-4534(02)02719-3