Electronic excitations of the YBa2Cu3O7−x superconductor: A study by transmission electron-energy-loss spectroscopy with an electron microprobe
C. H. Chen, L. F. Schneemeyer, S. H. Liou, M. Hong, J. Kwo, H. S. Chen, J. V. Waszczak
DOI 10.1103/PhysRevB.37.9780 · Physical Review B
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Abstract
Interband and core-level transitions and plasmon resonance in the high-temperature oxide superconductor YBa2Cu3O7−x were studied by transmission electron-energy-loss spectroscopy using an electron microprobe ∼5-10 Å in size. Both single-crystal and polycrystalline ceramic samples have been examined. No significant change in electronic structure was observed at the grain boundaries. A 13.5-eV interband-transition peak was found to be sensitive to damages created by ion-beam bombardment.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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