Abstract
We report a systematic study on the superconducting properties of MgCu2-type Laves phase compounds SrRh2 and BaRh2. SrRh2 and BaRh2 exhibit superconducting transitions atTc = 5.4 K and 5.6 K, respectively. The zero-temperature upper critical field μ0Hc2(0) and lower critical field μ0Hc1(0) are estimated to be 4.01(5) T and 10.1(3) mT for SrRh2, when both values are 4.63(5) T and 5.3(1) mT for BaRh2, indicating that they are type-II superconductors. The large specific heat jump combined with the strong electron–phonon coupling strength λe–ph suggests that they are intermediately coupled BCS bulk superconductors.
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