J. Phys. I France
Volume 1, Numéro 4, April 1991
Page(s) 445 - 448
DOI: 10.1051/jp1:1991144
J. Phys. I France 1 (1991) 445-448

A model of step geometry on the reconstructed W (001) surface

S. Pick

J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, Dolejskova 3, CS-182 23 Prague 8, Czechoslovakia

(Received 25 January 1991, accepted 12 February 1991)

The values of surface force constants indicate the presence of compressive surface stress on the ideal W (001) surface, supposing that surface interactions can be described by an effective two-body potential. Combining this idea with a phenomenological model of Roelofs et al., we find that surface steps should expand at their edges and that the polarization of the reconstruction on the W (001) surface perpendicular to the step edge is preferred.

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