Cuprate, Oxide, Electronic energy gap, Tetragonal

• Ba-Ca-Cu-O-Tl
• O-Sn-Sr
• Ag-Ba-Ca-Cu-O
• Ce-Cu-Fe-O-Sr-Y
• As-O-Sr
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• cuprate
• high-tc superconductor
• chalcogen
• oxide