Superconducting properties of an equiatomic hexagonal high-entropy alloy via muon spin relaxation and rotation measurement
Sonika Jangid, Pavan Kumar Meena, Niraj P. Atale, Rhea Stewart, Adrian D. Hillier, R. P. Singh
DOI 10.1103/PhysRevB.111.214504 · Physical Review B
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Abstract
Superconducting high-entropy alloys (HEAs) present a unique platform for studying the effect of disorder, composition, and crystal structure on superconducting pairing. In this study, we present a comprehensive bulk and microscopic investigation of the rarely observed equiatomic hexagonal HEA Nb-Mo-Ru-Re-Ir using magnetization, resistivity, heat capacity, and muon spin relaxation and rotation (µSR) measurements. Our findings confirm bulk type-II superconductivity with a transition temperature of 4.63(2) K and a high upper critical field. Heat capacity and transverse-field µSR data reveal conventional s-wave superconductivity, while zero-field µSR results suggest the preservation of time-reversal symmetry in the superconducting state. These findings provide valuable insights into the superconducting pairing mechanism in disordered multicomponent systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb0.20Mo0.20Ru0.20Re0.20Ir0.20 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.23 | Pressure unresolved | unknown |
| Nb0.20Mo0.20Ru0.20Re0.20Ir0.20 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.63 | Pressure unresolved | onset |
| Nb0.20Mo0.20Ru0.20Re0.20Ir0.20 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.54 | Pressure unresolved | unknown |
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