Observation of magnetic skyrmions in unpatterned symmetric multilayers at room temperature and zero magnetic field.

ABSTRACT: Magnetic skyrmions are promising candidates for the next generation of spintronic devices due to their small size and topologically protected structure. One challenge for using these magnetic states in applications lies on controlling the nucleation process and stabilization that usually requires an external force. Here, we report on the evidence of skyrmions in unpatterned symmetric Pd/Co/Pd multilayers at room temperature without prior application of neither electric current nor magnetic field. Decreasing the ferromagnetic interlayer thickness, the tuning of the physical properties across the ferromagnetic/non-magnetic interface gives rise to a transition from worm like domains patterns to isolated skyrmions as demonstrated by magnetic force microscopy. On the direct comparison of the me

SUBMITTER: Brandao J 

PROVIDER: S-EPMC6412027 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature