Engineering skyrmions in transition-metal multilayers for spintronics

摘要: Magnetic skyrmions are localized, topologically protected spin structures that have been proposed for storing or processing information due to their intriguing dynamical and transport properties. Important in terms of applications is the recent discovery interface stabilized as evidenced ultra-thin transition-metal films. However, so far only at interfaces with a single atomic layer magnetic material were reported, which greatly limits potential application devices. Here we predict emergence [4d/Fe2/5d]n multilayers, is, composed Fe biatomic layers sandwiched between 4d 5d layers. In these composite structures, exchange Dzyaloshinskii–Moriya interactions control skyrmion formation can be tuned separately by two interfaces. This allows engineering shown based on density functional theory dynamics simulations. Materials possessing anisotropic support quasiparticle textures, may exploited nanomagnetic Here, authors appearance multilayered thin films 5dtransition metals.