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Paper detail

Discrete surface solitons in two dimensions

We investigate fundamental localized modes in 2D lattices with an edge (surface). Interaction with the edge expands the stability area for ordinary solitons, and induces a difference between perpendicular and parallel dipoles; on the contrary, lattice vortices cannot exist too close to the border. Furthermore, we show analytically and numerically that the edge stabilizes a novel wave species, which is entirely unstable in the uniform lattice, namely, a "horseshoe" soliton, consisting of 3 sites. Unstable horseshoes transform themselves into a pair of ordinary solitons.

preprint2006arXivOpen access
H. SusantoP. G. KevrekidisB. A. MalomedR. Carretero-GonzalezD. J. Frantzeskakis
nlin.PS
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H. SusantoP. G. KevrekidisB. A. MalomedR. Carretero-GonzalezD. J. Frantzeskakis

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