Superconductivity and Madelung potential of YBa2Cu3O6+x ordered superstructures
Qiang Wang, Han Rushan, D. L. Yin, Z. Z. Gan
DOI 10.1103/PhysRevB.45.10834 · Physical Review B
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Abstract
The Madelung potential of each possible ordered superlattice of YBa2Cu3O6+x is calculated as the oxygen content x varies from zero to 1. ΔVA, the difference in Madelung site potential between apex and in-plane (CuO2) oxygen atoms, is presented as a function of the composition x. The correlation of Tc and x is discussed in terms of Ohta’s empirical curve of Tc vs ΔVA. The theoretical results suggest that the superconductivity depends on the superlattice structure.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6+x 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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