Superconductivity in the ferromagnet URhGe under uniaxial pressure

Abstract

Uniaxial pressure applied in the crystallographic direction perpendicular to spontaneous magnetization in the heavy fermion ferromagnet URhGe strongly stimulates superconductivity in this compound. The phenomenological approach allows us to point out two mechanisms of the increase in the superconducting temperature. They originate from stimulation by the uniaxial stress of both the intraband and interband amplitudes of triplet Cooper pairing. The phenomenon of reentrant superconductivity under a magnetic field along the axis is also strongly sensitive to uniaxial stress in the same direction. Uniaxial stress accelerates suppression of the Curie temperature by the transversal magnetic field. The emergence of a first-order transition to the paramagnetic state occurs at a much lower field than in the absence of uniaxial stress.

Source-reported materials — not catalogue approval

Similar papers