title: Facet ridge end points in crystal shapes
abstract: We study equilibrium crystal shapes (ECS) near facet ridge end points (FRE) by means of a numerical study of a body-centered solid-on-solid model on a square lattice with an enhanced uniaxial interaction range. This tests the stability of the so-called stochastic FRE point where the model maps exactly onto one dimensional Kardar-Parisi-Zhang-type growth and where the local ECS is simple. We find that the generic shapes are more complex. They contain first-order faceted to rough boundaries terminating in Pokrovsky-Talapov-type end points, and first-order ridges inside the rounded part of the ECS where two rough surface orientations coexist.
authors.affiliation: Department of Physics, University of Washington, P.O. Box 351560, Seattle, Washington 98195-1560, USA.
authors.initials: D
authors.lastname: Davidson
authors.lastname: den Nijs M