Edge states in doped antiferromagnetic nanostructures |
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Authors: | Chernyshev A L Castro Neto A H White S R |
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Institution: | Department of Physics, University of California, Irvine, California 92697, USA. |
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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. |
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