Ion-channeling anomalies at the superconducting transition temperature in single-crystal YBa2Cu3O7−y
T. Haga, K. Yamaya, Y. Abe, Y. Tajima, Y. Hidaka
DOI 10.1103/PhysRevB.41.826 · Physical Review B
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Abstract
The temperature dependence of the Rutherford backscattering in the 〈001〉 axial channeling mode for each constituent atom of single-crystal YBa2Cu3O7−y has been carried out to study a change in the structural properties at the superconducting transition. Anomalies of channeling behavior observed across the superconducting transition temperature suggest a structural instability or a change in the lattice. The anomalies of channeling for Y and Ba atoms suggest the phonon softening, while those for Cu and O atoms are not explained in terms of only the phonon softening, but probably indicate complicated lattice dynamics of Cu and O atoms.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | unknown |
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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