We report the temperature dependence of the zero-field ac-susceptibility of CeRhSi3 under several pressures. We have observed a clear difference between the onset temperature of superconducting transition Tc onset and main shielding temperature Tc main. Tc main approaches Tc onset with increasing pressure and merges at about 2.4 GPa at which the antiferromagnetism vanishes under zero field. In the temperatures between Tc onset and Tc main the decrease of χ′ is quite small while χ″ changes largely At Tc main, χ′ drops and χ″ peaks sharply as those of conventional superconductors. These results imply that CeRhSi3 has two different types of pinning state in the superconductivity and the appearance of them is probably associated with the antiferromagnetic state.
- Noncentrosymmetric superconductor
- Quantum phase transition
ASJC Scopus subject areas
- Physics and Astronomy(all)