2 x 3 Scanning tunnelling microscopy was used to study the Sb/Si(110) surface at room temperature. The scanning tunnelling microscopy filled-state image showed the presence of four protrusions per unit cell while the empty-state one presents two broader protrusions. These results were consistent with single Sb adatoms saturating three Si dangling bonds

Sb/Si(110) 2 x 3 Surface Studied with Scanning Tunnelling Microscopy - Evidence for Adatom Reconstruction. A.Cricenti, P.Perfetti, G.Le Lay, J.Zeysing, G.Falkenberg, L.Seehofer, R.L.Johnson: Physical Review B, 1999, 60, 13280-2

16 x 2 Reconstruction of Si (110)