Reply to “Comment on ‘Origin of the superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O systems’ ”
Eduard Galstyan, Yuyi Xue
DOI 10.1103/PhysRevB.79.016502 · Physical Review B
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Abstract
In their comment on our paper [Galstyan et al., Blackstead et al.Phys. Rev. B 76, 014501 (2007)], argued that multiphase Sr2YRu0.5Cu0.5O6−δ material possesses two distinct superconducting phases and attributed the low-temperature one (∼30 K) to the Cu-doped double-perovskite Sr2YRuO6 structure. In this Comment, we show that the superconductivity in Sr2YRu0.5Cu0.5O6−δ is apparently attributed to YSr2Cu3O7−δ or YSr2Cu3−xRuxO7−δ phases formed at high temperature during the sintering process. A similar situation may occur with low Cu doping, but further detailed work will certainly be helpful to clarify the physics in Sr2YRuO6 with relatively low Cu concentration.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2YRu0.5Cu0.5O6-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| Sr2YRu1-xCuxO6-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | onset |
| Sr2YRu1-xCuxO6-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 49 | Pressure not reported | onset |
| Sr2YRu1-xCuxO6-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | onset |
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