Imprinting skyrmions in thin films by ferromagnetic and superconducting   templates
  Magnetic skyrmions are promising candidates as information carriers in a new generation of memories. How to generate and stabilize skyrmions is essential for their successful application to technology. Here we theoretically demonstrate that arrays of skyrmions can be imprinted in ultrathin ferromagnetic films in large numbers by bringing a magnetic nanostructured template close to the film. Two kind of templates, allowed by present-day nanotechnologies, are studied: arrays of ferromagnetic nanorods and superconducting vortices. Skyrmions are generated when exposing magnetic films to the template fields for short times and remain stable after removing the template. 
Nuria Del-Valle, Sebastia Agramunt-Puig, Carles Navau, and Alvaro   Sanchez
cond-mat.mtrl-sci cond-mat.mes-hall cond-mat.supr-con