TY - JOUR
T1 - Ring clusters in transition-metalsilicon surface structures
AU - Bennett, Peter
AU - Copel, M.
AU - Cahill, D.
AU - Falta, J.
AU - Tromp, R. M.
PY - 1992
Y1 - 1992
N2 - We have determined the atomic structure of the Si(111)-(7× 7)Co surface using scanning tunneling microscopy and ion scattering. The unit cell contains one surface substitutional cobalt atom centered under a six silicon adatom cluster. High-temperature annealing produces a low density lattice gas of these ringlike clusters, giving rise to an impurity stabilized 1×1 structure. They occur for several other transition metals, suggesting a stable, universal, silicide related structure.
AB - We have determined the atomic structure of the Si(111)-(7× 7)Co surface using scanning tunneling microscopy and ion scattering. The unit cell contains one surface substitutional cobalt atom centered under a six silicon adatom cluster. High-temperature annealing produces a low density lattice gas of these ringlike clusters, giving rise to an impurity stabilized 1×1 structure. They occur for several other transition metals, suggesting a stable, universal, silicide related structure.
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U2 - 10.1103/PhysRevLett.69.1224
DO - 10.1103/PhysRevLett.69.1224
M3 - Article
AN - SCOPUS:0000962631
SN - 0031-9007
VL - 69
SP - 1224
EP - 1227
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
ER -