Three-dimensional chiral skyrmions with attractive interparticle   interactions
  We introduce a new class of isolated three-dimensional skyrmion that can occur within the cone phase of chiral magnetic materials. These novel solitonic states consist of an axisymmetric core separated from the host phase by an asymmetric shell. These skyrmions attract one another. We derive regular solutions for isolated skyrmions arising in the cone phase of cubic helimagnets and investigate their bound states. 
A. O. Leonov, T. L. Monchesky, J. C. Loudon, and A N Bogdanov
cond-mat.mes-hall