Superconducting parameters of spinel CuRh2S4 under pressure

Abstract

We investigated the magnetic properties of chalcogenide-spinel superconductor CuRh2S4 under pressure and estimated the pressure dependence of the superconducting parameters. With increasing pressure, the superconducting transition temperature (Tc), thermodynamic critical field (Hc), upper critical field (Hc2), penetration depth (λ), and GL parameter (κ) increase. Meanwhile, the lower critical field (Hc1) is unchanged and the Ginzburg-Landau coherence length (GL) is reduced by pressurization. The increasing value of indicates enhanced characteristics of the type-II superconductor CuRh2S4.