Unusual properties of a new superconductor La3Ni

Abstract

We report unusual properties of a new superconductor La3Ni, and discuss the correlation between them. The electronic specific heat coefficient in the normal state is estimated to be about 24 mJ/K2 per mole of formula unit. The electronic specific heat in the superconducting state reveals the T3 power-law. This result indicates that La3Ni is an unconventional superconductor with Tc ≈ 1.45 K. We also present the weakly temperature-dependent magnetic susceptibility and the T2 dependence of the electrical resistivity at low temperatures following a saturation at higher temperatures. © 1995.