Abstract
The equivalence between the body-centered solid-on-solid model and the asymmetric six-vertex model is used to study the surface free energy and the equilibrium shape of bcc crystals in the solid-on-solid approximation. The thermal evolution of the (001)- and (011)-type facets is investigated analytically and illustrated for different values of the anisotropy of the next-nearest-neighbor couplings. It is shown that the (001) facet undergoes a roughening transition of the Kosterlitz-Thouless universality class and that the asymptotic regime below the critical point T=${\mathit{T}}_{\mathit{R}}$ is large. The occurrence of a universal jump in surface stiffness at the point where this facet vanishes at ${\mathit{T}}_{\mathit{R}}$ is reconfirmed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call