title: Equilibrium shape of two-dimensional islands under stress
abstract: We show that the equilibrium shape anisotropy of two-dimensional islands in heteroepitaxial growth depends on island size, a consequence of the presence of strain. Even in homoepitaxy, in which the island shape has conventionally been equated with the ratio of step energies, a substrate surface stress anisotropy can influence island shape.
authors.affiliation: University of Wisconsin, Madison, Wisconsin 53706, USA.
authors.initials: A
authors.lastname: Li
authors.initials: F
authors.lastname: Liu
authors.initials: MG
authors.lastname: Lagally