Gap function with point nodes in borocarbide superconductor YNi2B2C was analyzed. The angular variation of c-axis thermal conductivity in magnetic field rotated with the ab plane showed a peculiar fourfold oscillation with narrow cusps. The results provided the evidence that the gap function had point nodes located along the a and b axes.
|Number of pages
|Physical Review Letters
|Published - Sept 23 2002
ASJC Scopus subject areas
- General Physics and Astronomy