Superconductivity in Ba1−xKxBiO3
Wei Jin, Marcos H. Degani, Rajiv K. Kalia, P. Vashishta
DOI 10.1103/PhysRevB.45.5535 · Physical Review B
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Abstract
Superconductivity in Ba1−xKxBiO3 is studied within the framework of Eliashberg theory using a model of the electron-phonon interaction, α2F(ω). The model is based upon molecular-dynamics calculations of the phonon density of states, which are in good agreement with inelastic-neutron-scattering experiments. The function α(ω) is constructed using information from electron-tunneling experiments. Our model is constructed with the premise that the electron-phonon coupling constant λ≊1 and that strong electron-phonon coupling exists for high-energy (30–60 meV) phonon modes. Superconducting properties of the material at zero and finite temperatures are calculated and compared with experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | 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. | — | Pressure not reported | unknown |
| Ba0.625K0.375BiO3 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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