J. Phys. I France 1 (1991) 445-448
A model of step geometry on the reconstructed W (001) surfaceS. 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.
© Les Editions de Physique 1991