Switching of chiral magnetic skyrmions by picosecond magnetic field pulses via transient topological states.

ABSTRACT: Magnetic chiral skyrmions are vortex like spin structures that appear as stable or meta-stable states in magnetic materials due to the interplay between the symmetric and antisymmetric exchange interactions, applied magnetic field and/or uniaxial anisotropy. Their small size and internal stability make them prospective objects for data storage but for this, the controlled switching between skyrmion states of opposite polarity and topological charge is essential. Here we present a study of magnetic skyrmion switching by an applied magnetic field pulse based on a discrete model of classical spins and atomistic spin dynamics. We found a finite range of coupling parameters corresponding to the coexistence of two degenerate isolated skyrmions characterized by mutually inverted spin structures w

SUBMITTER: Heo C 

PROVIDER: S-EPMC4897691 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature