TY  - JOUR
AU  - Filimonov, S. N.
AU  - Cherepanov, V.
AU  - Hervieu, Yu. Yu.
AU  - Voigtländer, B.
TI  - Si nucleation on Si(111)-7x7: from cluster pairs to 2D islands
JO  - Surface science
VL  - 601
SN  - 0039-6028
CY  - Amsterdam
PB  - Elsevier
M1  - PreJuSER-58707
SP  - 3876 - 3880
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - Nucleation of 2D islands in Si/Si(111)-7 x 7 molecular beam epitaxy is studied using scanning tunneling microscopy (STM). A detailed analysis of the population of small amorphous clusters coexisting on the surface with epitaxial 2D islands has been performed. It is shown that small clusters tend to form pairs. The pairs serve as precursors for 2D islands as confirmed by direct STM observations of the smallest 2D islands covering two adjacent half-unit cells of the 7 x 7 reconstruction. it is proved with scaling arguments that the critical nucleus for 2D island formation consists not only of the pair itself, but also includes additional adatoms not belonging to the stable clusters. (C) 2007 Elsevier B.V. All rights reserved.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000250414600044
DO  - DOI:10.1016/j.susc.2007.04.031
UR  - https://juser.fz-juelich.de/record/58707
ER  -