Abstract
We report on pressure-induced evolutions of antiferromagnetic spin fluctuations (AFM-SFs) and unconventional superconductivity on the x = 0.6 sample in a series of compounds CeRh 1 - x Ir x In 5 via the 115In nuclear-quadrupole-resonance (NQR) experiment. The In-NQR 1 / T 1 measurements have revealed that the slight application of pressure makes T c = 0.9 K at P = 0 increase up to T c = 1.06 K at P = 0.47 GPa . Concomitantly, the character of AFM-SF evolves from an isotropic regime to an anisotropic one as P increases. These results suggest that AFM-SFs play vital role in mediating the strong-coupling superconductivity in CeRh 1 - x Ir x In 5 .
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