Chalcogen, Charge-density wave state, Conductor, Transitional, Trigonal

• Se-Ti
• Fe-Lu-O
• S-Ta
• Cu-Se-Ti
• S-Ta-Ti
• electronic and electrical properties
• optical properties
• phase transitions
• structural transitions
• magnetic properties
• transitional
• charge-density wave state
• chalcogen
• conductor
• non-disordered