Abstract
The low temperature specific heat of the borocarbide superconductor LuNi2B2C was measured under various magnetic fields (H) up to 8 T. The coefficient of the T-linear term in specific heat in the mixed state shows marked deviations from the H-linear dependence expected for conventional superconductors and is found to obey a √H dependence. A good description of the data can be obtained by assuming the presence of a zero-gap region along lines on the Fermi surface, indicating the possibility of unconventional pairing in the superconducting state of the borocarbides.
Original language | English (US) |
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Pages (from-to) | 1888-1891 |
Number of pages | 4 |
Journal | Journal of the Physical Society of Japan |
Volume | 66 |
Issue number | 7 |
DOIs | |
State | Published - Jul 1997 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy
Keywords
- Borocarbide superconductors
- LuNiBC
- Quasiparticle states
- Specific heat