The nonmagnetic superconductor LuNi2B2C via the dependence of heat capacity on a magnetic field angle and a magnetic field was studied. The heat capacity exhibits a fourfold variation as the field H plane with minimum (100). It was found that a disorderd sample A shows a deviation from H1/2 and a (4+4)- fold pattern in heat capacity. The anomaloous pattern in terms of coexixting superconducting gap anisotropy and nonlocal effects was also discussed.
Publication Source (Journal or Book title)
Physical Review Letters
Park, T., Chia, E., Salamon, M., Bauer, E., Vekhter, I., Thompson, J., Choi, E., Kim, H., Lee, S., & Canfield, P. (2004). Evidence for the coexistence of an anisotropic superconducting gap and nonlocal effects in the nonmagnetic superconductor LuNi2B 2C. Physical Review Letters, 92 (23) https://doi.org/10.1103/PhysRevLett.92.237002