Superconducting gap structure of YNi2B2C determined by thermal conductivity

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

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Abstract

In order to determine the superconducting gap structure of the borocarbide superconductor YNi2B2 C, we have measured the angular variation of the c-axis thermal conductivity Kzz in magnetic field rotated within the ab-planes. A clear fourfold symmetry with narrow cusps was observed in the angular variation of kzz. 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)1095-1100
Number of pages6
JournalJournal of Low Temperature Physics
Volume131
Issue number5-6
DOIs
Publication statusPublished - Jun 2003
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Kamata, K., Izawa, K., Nakajima, Y., Matsuda, Y., Watanabe, T., Nohara, M., Takagi, H., Takeya, H., Hirata, K., Thalmeier, P., & Maki, K. (2003). Superconducting gap structure of YNi2B2C determined by thermal conductivity. Journal of Low Temperature Physics, 131(5-6), 1095-1100. https://doi.org/10.1023/A:1023453127025