1995 Volume 64 Issue 6 Pages 1945-1954
The vicinal surface is well described by the terrace-step-kink model below the faceting temperature. On the basis of this model, the statistical-mechanics of the surface is transformed to the one-dimensional free-fermion system. On the other hand, rough surfaces including the vicinal surface are also expressed by the capillary-wave model. The two pictures of the vicinal surface are quite different, but we successfully derive the capillary wave description with the ''correct stiffness tensor'' from the free-fermion description by the bosonization technique. We show that the low-energy fluctuation of the terrace-step-kink model can be expressed by the capillary-wave picture in the sense inclusive of the anisotropic properties.
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