d-band metal Y9Co7 revisited: Evidence for local coexistence of superconductivity and itinerant ferromagnetism
Ł. Bochenek, K. Rogacki, A. Kołodziejczyk, T. Cichorek
DOI 10.1103/PhysRevB.91.235314 · Physical Review B
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Abstract
The heat capacity, magnetic, and electrical transport properties of the binary intermetallic compound Y9Co7 are re-investigated through careful low-temperature measurements performed on one and the same high-quality polycrystalline sample. Our results indicate a local coexistence of itinerant ferromagnetism and bulk superconductivity in Y9Co7 below Tsc=2.95 K, as opposite to a previous conviction that superconductivity occurs in the paramagnetic phase embedded in a basically normal magnetic environment. Since the clean-limit condition is satisfied for a pure sample of Y9Co7, the question whether magnetic fluctuations contribute in the formation of Cooper pairs in this sole d-band ferromagnetic superconductor remains open.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y9Co7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.95 | Pressure not reported | midpoint |
| Y9Co7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.75 | Pressure not reported | onset |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| UCoGe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.6 | Pressure not reported | unknown |
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