Superconducting Parameters of Spinel CuRh2S4 under Pressure
M. Ito, A. Taira and K. Sonoda
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890-0065, Japan
Received: February 16, 2016; Revised version: February 7, 2017; In final form: April 14, 2017
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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 (ξGL) is reduced by pressurization. The increasing value of κ indicates enhanced characteristics of the type-II superconductor CuRh2S4.

DOI: 10.12693/APhysPolA.131.1450
PACS numbers: 74.70.Dd, 74.62.Fj, 74.25.Bt