Skip to content

115In-NQR evidence for unconventional superconductivity in CeIn3 under pressure

S. Kawasaki, T. Mito, Y. Kawasaki, G. -q. Zheng, Y. Kitaoka, H. Shishido, S. Araki, R. Settai, Y. Onuki

cond-mat.str-elarXiv:cond-mat/0208210

Abstract

We report evidence for unconventional superconductivity in CeIn3 at a pressure P = 2.65 GPa above critical pressure (Pc ~ 2.5 GPa) revealed by the measurements of nuclear-spin-lattice-relaxation time (T1) and ac-susceptibility (ac-chi). Both the measurements of T1 and ac-chi have pointed to a superconducting transition at Tc = 95 mK, which is much lower than an onset temperature Tonset = 0.15 K at zero resistance. The temperature dependence of 1/T1 shows no coherence peak just below Tc, indicative of an unconventional nature for the superconductivity induced in CeIn3.

Create a lesson