title: "Devil's staircases" in bulk-immiscible ultrathin alloy films.
abstract: Ground-state phase diagrams of ultrathin epitaxial alloy films are studied within the framework of a discrete lattice-model Hamiltonian incorporating competing elastic and chemical interactions. For bulk-immiscible alloy systems an infinite number of commensurate, long-period stripe-superstructure ground states are obtained as a function of chemical potential. The average periodicity of these stripe superstructures is found to be a nonmonotonic function of alloy composition, in contrast to the predictions of continuum theories for two-dimensional systems with competing interactions.
authors: Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.
authors: B D
authors: BD
authors: Krack
authors: V
authors: V
authors: Ozoliņs
authors: M
authors: M
authors: Asta
authors: I
authors: I
authors: Daruka