Edge states in doped antiferromagnetic nanostructures.
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.
Chernyshev
A L
AL
Department of Physics, University of California, Irvine, California 92697, USA.
Castro Neto
A H
AH
White
S R
SR