A. Krol, C.J. Sher, et al.
Surface Science
We have carried out a study of the effect of oxygen stoichiometry on the k=0 phonon spectrum of the high-Tc superconductor YBa2Cu3Ox using Raman spectroscopy. Polycrystalline samples were prepared with oxygen content x varying from 7.0, where the material is orthorhombic and superconducting, to 6.0, where it is tetragonal and semiconducting. The frequency and intensity of the k=0 phonon modes of Ag symmetry at 151, 340, 435, and 502 cm-1 (for x=7) were studied as a function of oxygen content. © 1988 The American Physical Society.
A. Krol, C.J. Sher, et al.
Surface Science
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
R. Ghez, M.B. Small
JES
Kigook Song, Robert D. Miller, et al.
Macromolecules