Electronic and atomic structures of a Sn induced 33×33 superstructure on the Ag/Ge(111) 3×3 surface

Figures show atomic structure of the 33×33 surface, obtained by scanning tunneling microscopy (STM) at RT. The 33×33 surface is formed after adding 0.45 ML of Sn onto the Ag/Ge(111) 3×3 surface. Figures show the detailed electronic structure of the 33×33 surface, obtained by angle-resolved photoelectron spectroscopy (ARPES) using a photon energy of 30 eV at 100 K.201