Cuprate, Oxide, Electronic energy gap

• Ba-Ca-Cu-O-Tl
• Ba-Cu-O-Tl
• Bi-Ca-Cu-O-Sr
• Ba-Cu-La-O
• O-Sn-Sr
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• cuprate
• high-tc superconductor
• chalcogen
• oxide
• tetragonal
• orthorhombic
• monoclinic
• triclinic