Nodeless superconductivity in quasi-one-dimensional Nb2PdS5: A μSR study
P. K. Biswas, H. Luetkens, Xiaofeng Xu, J. H. Yang, C. Baines, A. Amato, E. Morenzoni
DOI 10.1103/PhysRevB.91.100504 · Physical Review B
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Abstract
Muon spin relaxation and rotation (μSR) measurements have been performed to study the superconducting and magnetic properties of Nb2PdS5. Zero-field μSR data show that no sizable spontaneous magnetization arises with the onset of superconductivity in Nb2PdS5, which indicates that the time-reversal symmetry is probably preserved in the superconducting state of this system. A strong diamagnetic shift is observed in the transverse-field μSR data practically ruling out a dominant triplet-pairing superconducting state in Nb2PdS5. The temperature dependence of magnetic penetration depth evidences the existence of a single s-wave energy gap Δ(0) with a gap value of 1.07(4) meV at zero temperature. The ratio Δ(0)/kBTc=2.02(9) indicates that Nb2PdS5 should be considered as a moderately strong-coupling superconductor. The magnetic penetration depth at zero temperature is 785(20) nm, indicating a very low superfluid density consistent with the quasi-one-dimensional nature of this system.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb2PdS5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.6 | Pressure not reported | onset |
| Nb2PdS5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.05 | Pressure not reported | zero_resistance |
| Nb2PdS5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | onset |
| Nb2PdS5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.2 | Pressure not reported | midpoint |
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