Evidence for superconductivity at Tc=12 K in oxygen-deficient MoO2−δ and properties of molybdenum arsenide and oxide binaries
D. Parker, J. C. Idrobo, C. Cantoni, A. S. Sefat
DOI 10.1103/PhysRevB.90.054505 · Physical Review B
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Abstract
We find signatures of superconductivity at Tc=12 K in a molybdenum arsenide sample containing ∼4% of MoO2−δ impurity by weight. Below is a report on the electronic structure calculations, structures analyses, and thermodynamic and transport properties on Mo2As3, Mo5As4, and MoO2, in order to uncover the reasons for superconductivity for the sample that contains a mixture of these phases. The experimental and theoretical evidence suggest that superconductivity in the MoO2−δ phase is likely and may be caused by nesting-type fluctuations.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MoO2-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure unresolved | onset |
| MoO2-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure unresolved | onset |
| Mo Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.9 | Pressure not reported | unknown |
| KxMoO2-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.5 | Pressure not reported | unknown |
| KxMoO2-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.5 | Pressure not reported | unknown |
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