We analyse surface solitons at the interface between a one-dimensional photonic superlattice and a uniform medium with weak nonlocal nonlinearity.We demonstrate that in deep lattices there exist three kinds of surface solitons when the propagation constant exceeds a critical value,including two on-site solitons and one off-site soliton.These three kinds of surface solitons have unique dynamical properties.If the relative depth of the superlattice is low,there is only one kind of off-site soliton;however,the solitons of this kind can propagate stably,unlike their deep superlattice counterparts.Dipole surface solitons are also investigated,and the stable domain is given.
