Electronic energy gap, Ge-x polyhedra, Hexagonal

• Ga-Ge-Y
• Ge
• Au-Ge-Nd
• Ge-La-Ni
• Ge-Na
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• spin-orbit splitting of valence band
• metalloid
• transitional
• rare earth
• intermetallic