Stress change in YBa2Cu3O7−δ close to the superconducting transition
L. X. Cao, R. K. Kremer, Y. L. Qin, J. Brötz, J. S. Liu, J. Zegenhagen
DOI 10.1103/PhysRevB.66.054511 · Physical Review B
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Abstract
Measurements on Au/Pb(Zr1−xTix)O3/YBa2Cu3O7−δ (x=0.47,0) thin film capacitor structures on SrTiO3(001) reveal a jump up to ≈30% in the dielectric constant of the ferroelectric Pb(Zr0.53Ti0.47)O3 films, which starts about 10 K above the superconducting transition of the underlying YBa2Cu3O7−δ layer. We show that this can be understood by a stress release in the ferroelectric film which must be caused by a stress change in the high-temperature superconductor starting already significantly above Tc.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 61 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 57 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 41 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 75 | Pressure not reported | onset |
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