Transmutation of the vicinal surface exponent due to gravity
Avron, J. E.
Zia, R. K. P.
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Near the edge of a facet, vicinal surfaces curve away from the plane with exponent (3/2. With gravity normal to the facet the exponent may change to 3. Generally, there will be a crossover from 3 to (3/2 as the facet edge is approached. Comparison with experiments is made.