Ba-Cu-O-Y, Chalcogen, Trigonal prism 6-vertex

• superconductivity
• electronic and electrical properties
• thermal and thermodynamic properties
• superconducting transition temperature
• values of superconducting transition temperature
• chalcogen
• antiferroelectric
• antiferromagnetic
• alkaline
• charge-density wave state
• orthorhombic
• tetragonal