title: Edge states in doped antiferromagnetic nanostructures.
abstract: We study competition between different phases in a strongly correlated nanostructure with an edge. Making use of the self-consistent Green's function and density matrix renormalization group methods, we study a system described by the t-J(z) and t-J models on a strip of a square lattice with a linear hole density n(||). At intermediate interaction strength J/t we find edge stripelike states, reminiscent of the bulk stripes that occur at smaller J/t. We find that stripes attach to edges more readily than hole pairs, and that the edge stripes can exhibit a peculiar phase separation.
authors.affiliation: Department of Physics, University of California, Irvine, California 92697, USA.
authors.forename: A L
authors.initials: AL
authors.lastname: Chernyshev
authors.forename: A H
authors.initials: AH
authors.lastname: Castro Neto
authors.forename: S R
authors.initials: SR
authors.lastname: White