Cuprate, Oxide, Tetragonal, Values of electronic energy gap

• Ba-Ca-Cu-O-Tl
• Ce-Cu-Fe-O-Sr-Y
• Ag-Ba-Ca-Cu-O
• Ba-Cu-Hg-O-Tl
• Ba-Ca-Cu-Hg-O-Re
• cuprate
• high-tc superconductor
• chalcogen
• oxide