Superconductivity and pressure-induced electronic topological changes in

Abstract

Refined measurements are reported on the pressure dependence of the superconducting transition temperature in the heavy-fermion (HF) superconductor . Two characteristic pressures, GPa and GPa, delimit three ranges of the superconducting state. The present study confirms the unique behaviour of in the series of HF superconductors. This particular behaviour is interpreted as resulting from two contributions: a smooth one due to the pressure-increased Kondo temperature and sharper additional features reflecting topological changes in the renormalized heavy bands.