Reconstructed structures in metal/Si(100) surfaces at high temperature observed by scanning tunneling microscopy

Reconstructed structures of metal on Si(100)2×1 surfaces annealed at high temperature have been investigated by scanning tunneling microscopy as functions of the type of metal, coverage, and annealing temperature. The reconstruction mechanisms at high temperature depend on the type of metal. In the present paper, the formation mechanisms of reconstruction at high temperature are classified briefly into three categories and are discussed qualitatively.