SURFACE RECONSTRUCTION SUGGESTS A NUCLEATION MECHANISM IN BULK - SB SI(113) AND (113)PLANAR DEFECTS/

We report results of scanning tunneling microscopy measurements and ab initio total energy calculations showing that certain submonolayer co verages of Sb on Si(113), which is a stable surface resembling a mixtu re of Si(001) and Si(111), force some atoms into interstitial sites. T he geometry is novel for surface reconstruction but closely related to the structure of bulk rodlike defects. This qualitatively new behavio r of group V atoms on silicon shows that studies of passivated surface s can provide data useful for verification of bulk defect models. (C) 1998 Elsevier Science B.V. All rights reserved.