Nodeless superconductivity in the noncentrosymmetric Mo3Rh2N superconductor: A μSR study
T. Shang, Wensen Wei, C. Baines, J. L. Zhang, H. F. Du, M. Medarde, M. Shi, J. Mesot, T. Shiroka
DOI 10.1103/PhysRevB.98.180504 · Physical Review B
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Abstract
The noncentrosymmetric superconductor Mo3Rh2N, with Tc=4.6 K, adopts a β-Mn-type structure (space group P4132), similar to that of Mo3Al2C. Its bulk superconductivity was characterized by magnetization and heat-capacity measurements, while its microscopic electronic properties were investigated by means of muon-spin rotation and relaxation (μSR). The low-temperature superfluid density, measured via transverse-field (TF)-μSR, evidences a fully gapped superconducting state with Δ0=1.73kBTc, very close to 1.76kBTc, the BCS gap value for the weak-coupling case, and a magnetic penetration depth λ0=586 nm. The absence of spontaneous magnetic fields below the onset of superconductivity, as determined by zero-field (ZF)-μSR measurements, hints at a preserved time-reversal symmetry in the superconducting state. Both TF- and ZF-μSR results evidence a spin-singlet pairing in Mo3Rh2N.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Mo3Rh2N Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.6 | Pressure not reported | onset |
| Mo3Rh2N Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.6 | Pressure not reported | unknown |
| Mo3Rh2N Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.6 | Pressure not reported | unknown |
| Mo3Al2C 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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