Photoemission studies of the high-Tc superconductor Ba2YCu3O9−δ
P. D. Johnson, S. L. Qiu, L. Jiang, M. W. Ruckman, Myron Strongin, S. L. Hulbert, R. F. Garrett, B. Sinković, N. V. Smith, R. J. Cava, C. S. Jee, D. Nichols, E. Kaczanowicz, R. E. Salomon, J. E. Crow
DOI 10.1103/PhysRevB.35.8811 · Physical Review B
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Abstract
Valence-band photoemission measurements have been made both above and below the Tc of Ba2YaCu3O9−δ where δ=2.1. We find similarities to recent calculations of the electronic properties. However, the experimental binding energies are between 1.0 and 1.4 eV further from the Fermi level than the calculation. We suggest that this difference may affect attempts to predict Tc from tight-binding modeling of the electron-phonon mechanism.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba2YCu3O9-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
| Ba2YCu3O9-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 98 | Pressure not reported | onset |
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