Coherent twin boundaries in high-Tc superconducting oxides
F. M. Mueller, S. P. Chen, M. L. Prueitt, J. F. Smith, J. L. Smith, D. Wohlleben
DOI 10.1103/PhysRevB.37.5837 · Physical Review B
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Abstract
When subjected to a low-temperature annealing cycle similar to that of Bhargava et al., 1:2:3 superconducting oxides are shown to form fine, 250-Å spaced twins. The symmetry of the crystal is markedly altered. A theoretical calculation shows that twins introduce minigaps into the electronic structure. The implications for high-Tc superconductivity are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| R1Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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