Chalcogen, Charge-density wave state, Metal, Energy band structure

• Ba-Cu-O-Y
• Nb-Se
• Se-Ti
• Se-Ta
• S-Ta
• electron energy band structure
• Fermi surface
• Fermi energy
• Brillouin zone
• energy at Fermi level
• metal
• charge-density wave state
• chalcogen
• transitional
• non-disordered
• orthorhombic
• tetragonal
• hexagonal
• trigonal
• monoclinic