Dissipationless Spin Transport in Thin Film Ferromagnets
  Metallic thin film ferromagnets generically possess spiral states that carry dissipationless spin currents. We relate the critical values of these supercurrents to micromagnetic material parameters, identify the circumstances under which the supercurrents will be most robust, and propose experiments which could reveal this new collective transport behavior. 
J\"urgen K\"onig, Martin Chr. B{\o}nsager, and Allan H. MacDonald