Wigner-Seitz local-environment study of the high-Tc superconductors
M. Melamud, L. H. Bennett, R. E. Watson
DOI 10.1103/PhysRevB.38.4624 · Physical Review B
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Abstract
The near-neighbor environments and the bonding of atoms in the high-Tc superconductors are studied using a Wigner-Seitz-cell contruction. Assuming metallic radii for the atoms, it is shown that the Ba, Y, and La atoms have large coordination numbers, implying a three-dimensional bonding scheme. The La-Cu-O type (≃40 K) and the Y-Ba-Cu-O type (≃90 K) superconductors both display the same bonding characteristics.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Sr0.15CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 40 | Pressure not reported | unknown |
| BaPb1-xBixO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13 | Pressure not reported | unknown |
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