Surface dark solitons in nonlocal nonlinear media
  We predict the existence of surface dark solitons at the interface between a self-defocusing nonlocal nonlinear medium and a linear medium. The fundamental and higher-order surface dark solitons can exist when the linear refractive index of the self-defocusing media is much larger than that of the linear media. The fundamental solitons are stable and the stabilities of higher-order solitons depend on both nonlocality degree and propagation constant. 
XingHui Gao, Luohong Zhou, ZhenJun Yang, Xuekai Ma, Daquan Lu, and Wei   Hu
physics.optics nlin.PS