Superconducting properties of the noncentrosymmetric superconductor Re6Hf
D. Singh, A. D. Hillier, A. Thamizhavel, R. P. Singh
DOI 10.1103/PhysRevB.94.054515 · Physical Review B
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Abstract
We report synthesis and detailed characterization of the noncentrosymmetric superconductor Re6Hf using powder x-ray diffraction (XRD), magnetization, transport, and thermodynamic measurements. XRD confirmed the noncentrosymmetric, α-Mn cubic structure in Re6Hf with the cubic cell parameter a=9.6850(3) Å. Resistivity, DC, and AC magnetization measurements confirmed the type-II superconductivity in Re6Hf with the transition temperature Tconset∼5.96 K, having the lower critical field Hc1(0)5.6 mT and upper critical field Hc2(0)12.2 T. The electronic specific heat data fits well with the single-gap BCS model. The Sommerfeld coefficient (γ) also shows linear relation with the magnetic field. All above results suggest s-wave superconductivity in Re6Hf.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Re6Hf Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.96 | Pressure not reported | onset |
| Re6Hf Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.94 | Pressure not reported | onset |
| Re6Hf Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.96 | Pressure not reported | midpoint |
| Re6Zr Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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