TY  - JOUR
AU  - Romanyuk, K.
AU  - Cherepanov, V.
AU  - Voigtländer, B.
TI  - Symmetry breaking in the growth of two-dimensional islands on Si(111)
JO  - Physical review letters
VL  - 99
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-58708
SP  - 126103
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - We find that the shape of two-dimensional (2D) Si or Ge islands has a lower symmetry than the threefold symmetry of the underlying Si(111) substrate if Bi is used as a surfactant during growth. Arrow-shaped or rhomb-shaped 2D islands are observed by scanning tunneling microscopy. This symmetry breaking is explained by a mutual shift between the surface reconstructions present on the substrate and on the islands. Using the kinematic Wulff construction the growth velocities of the steps could be determined from the island shape if the nucleation center has been located by a marker technique.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000249668000048
DO  - DOI:10.1103/PhysRevLett.99.126103
UR  - https://juser.fz-juelich.de/record/58708
ER  -