Single-Crystal Micro-Raman Spectroscopy of Phases in the Y-Ba-Cu-O Superconductor
R. J. Hemley, H. K. Mao
DOI 10.1103/PhysRevLett.58.2340 · Physical Review Letters
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Abstract
Single-crystal micro-Raman spectroscopy is used to characterize the structures and phonon properties of the YBa2Cu3O6+x and Y2BaCuO5 phases present in the original 93-K Y-Ba-Cu-O superconducting compound. The vibrational Raman spectrum of the opaque YBa2Cu3O6+x phase consists of prominent bands at 142, 338, 483, and 595 cm−1. Polarized spectra of 10-30-μm single crystals of this phase are consistent with the tetragonal average structure determined by single-crystal x-ray diffraction measurements on the same samples.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
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