Calculations of the electronic structure and superconducting properties of BaPb1−xSbxO3
J. P. Julien, D. A. Papaconstantopoulos, F. Cyrot-Lackmann, A. Pasturel
DOI 10.1103/PhysRevB.43.2903 · Physical Review B
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Abstract
We have performed a band-structure calculation of the cubic perovskite compound BaSbO3 by the augmented-plane-wave method. Using these results we have constructed an accurate tight-binding Hamiltonian which we used to calculate the density of states of the alloy BaPb0.75Sb0.25O3 by the coherent-potential approximation. We have also calculated the electron-phonon coupling and found that such coupling can explain the low transition temperature Tc of this alloy system and the higher Tc for the Bi-doped alloy. A prediction is made for a much higher transition temperature for Sb- or Bi-rich alloys.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaPb0.75Sb0.25O3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | Pressure not reported | unknown |
| BaPb0.7Bi0.3O3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure not reported | unknown |
| Ba0.6K0.4BiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| BaPb0.75Bi0.25O3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure not reported | unknown |
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