TY - JOUR
T1 - Influence of kinks on the structure of narrow SB terrace on Si(001) surface
AU - Nakamura, Yoshimichi
AU - Kawai, Hiroshi
AU - Nakayama, Masatoshi
N1 - Funding Information:
The MCS was performed at the Research Institute for Applied Mechanics in Kyushu University through the courtesy of Professor E. Kuramoto. This work was supported by New Frontier Program Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 1999/5/10
Y1 - 1999/5/10
N2 - We study the influence of kinks on the structure of a narrow SB terrace on Si(001) surface by using Monte Carlo simulations (MCS) based on the asymmetric dimer model. Coupling constants among the buckling of the dimers given by the first-principles calculation are used. The SA and SB step edges are treated by the free boundary condition for the buckling of the dimers. The kink at the SA step was treated as an external field to the neighbouring dimer on the SB terrace on the basis of the STM observation results. The fluctuation of the system is suppressed at the dimer row connected to the kink. We find that the system practically corresponds to the one-dimensional Ising spin system with defect spins at low temperature. The influence of the kink appears in a different way in STM images in accordance with the different scales of the observation time. We predict thermal equilibrium behaviour of the narrow SB terrace with kinks at very low temperature.
AB - We study the influence of kinks on the structure of a narrow SB terrace on Si(001) surface by using Monte Carlo simulations (MCS) based on the asymmetric dimer model. Coupling constants among the buckling of the dimers given by the first-principles calculation are used. The SA and SB step edges are treated by the free boundary condition for the buckling of the dimers. The kink at the SA step was treated as an external field to the neighbouring dimer on the SB terrace on the basis of the STM observation results. The fluctuation of the system is suppressed at the dimer row connected to the kink. We find that the system practically corresponds to the one-dimensional Ising spin system with defect spins at low temperature. The influence of the kink appears in a different way in STM images in accordance with the different scales of the observation time. We predict thermal equilibrium behaviour of the narrow SB terrace with kinks at very low temperature.
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U2 - 10.1016/S0039-6028(99)00356-8
DO - 10.1016/S0039-6028(99)00356-8
M3 - Article
AN - SCOPUS:0032627071
SN - 0039-6028
VL - 426
SP - 251
EP - 258
JO - Surface Science
JF - Surface Science
IS - 2
ER -