Abstract
Isolated Si ad-dimers nucleate predominantly on Si(100) substrate dimer rows at room temperature. Using tunneling microscopy (STM), we find that, while ad-dimers oscillate between two mutually orthogonal orientations, the geometry with the ad-dimer bond perpendicular to the substrate’s dimer bonds is the more stable. This observation confirms a prediction of ab initio calculations with a gradient correction for the energies of ad-dimers in various configurations, which differs from that of the local density approximation (LDA).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Z. Zhang and H. Metiu. Surf. Sci. Lett. 292, L781 (1993).
Z. Zhang and H. Metiu. Surf. Sci. 245, 353 (1991).
Z. Zhang, Y. Lu and H. Metiu. Surf. Sci. Lett. 255, L543-L549 (1991).
D. Srivastava and B. Garrison. Phys. Rev. B 47, 4464 (1993).
A. Rockett. Surf. Sci. 312, 201 (1994).
M.V.R. Murty, H. Atwater, A. Kellock and J. Baglin. App. Phys. Lett. 62, 2566 (1993).
M. Wilby, M. Ricketts, S. Clarke and D. Vvedensky. J. Crystal Growth 111, 864 (1991).
R. Car and M. Parrinello. Phys. Rev. Lett. 55, (1985).
J. Perdew. in Electronic Structure of Solids ‘91 (eds. Ziesche, P. & Eschrig, H.) (Akademie, Berlin, 1991).
A. Becke. J. Chem. Phys 98, 5648 (1993).
C. Lee, W. Yang and R. Parr. Phys. Rev. B 37, 785 (1988).
A. Smith, et al. J. Chem. Phys. 102, 1044 (1995).
Y.-W. Mo. Science 261, 886 (1993).
G. Brocks, P. Kelly and R. Car. Surf. Sci. 269/270, 860–866 (1992).
P. Bedrossian. Phys. Rev. Lett. 74, 3648 (1995).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bedrossian, P.J., Smith, A.P. & Jonsson, H. Silicon AD-Dimer Binding on Si(100). MRS Online Proceedings Library 389, 35–39 (1995). https://doi.org/10.1557/PROC-389-35
Published:
Issue Date:
DOI: https://doi.org/10.1557/PROC-389-35