Ba-Cu-O-Y, Chalcogen, Conductor, Semiconductor, Phonons

• Ba-Co-Cu-O-Y
• Ba-Cu-Fe-O-Y
• Ba-Cu-Na-O-Y
• Ba-Cu-F-O-Y
• wavenumber of optical phonon
• Raman spectra
• wavenumber of longitudinal optical phonon
• vibrational spectra
• high-tc superconductor
• conductor
• alkaline
• chalcogen
• oxide
• orthorhombic
• tetragonal