Chalcogen, Conductor, Metal, Energy band structure, Trigonal

• Bi-Se
• Bi-Te
• Se-Ti
• Bi-I-Te
• S-Ti
• electron energy band structure
• Fermi energy
• Fermi surface
• energy at Fermi level
• Brillouin zone
• conductor
• chalcogen
• metal
• non-disordered
• semiconductor