Evidence of point nodes in superconducting gap of borocarbide superconductor YNi2B2C

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

Research output: Contribution to journalArticle

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 2003
Externally publishedYes

Fingerprint

Superconducting materials
Thermal conductivity
Magnetic fields
Crystals
cusps
thermal conductivity
symmetry
magnetic fields
crystals

Keywords

  • Borocarbides
  • Superconducting gap structure
  • Thermal conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Evidence of point nodes in superconducting gap of borocarbide superconductor YNi2B2C. / Kamata, K.; Izawa, K.; Nakajima, Y.; Matsuda, Y.; Watanabe, T.; Nohara, Minoru; Takagi, H.; Takeya, H.; Hirata, K.; Thalmeier, P.; Maki, K.

In: Physica C: Superconductivity and its Applications, Vol. 388-389, 05.2003, p. 185-186.

Research output: Contribution to journalArticle

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

AU - Nohara, Minoru

AU - Takagi, H.

AU - Takeya, H.

AU - Hirata, K.

AU - Thalmeier, P.

AU - Maki, K.

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