• DOI:10.1063/5.0063887
• Corpus ID: 235765616

Torque field and skyrmion motion by spin transfer torque in a quasi-2D interface in presence of strong spin–orbit interaction

@article{Osca2021TorqueFA,
  title={Torque field and skyrmion motion by spin transfer torque in a quasi-2D interface in presence of strong spin–orbit interaction},
  author={Javier Osca and Bart Sor'ee},
  journal={Journal of Applied Physics},
  year={2021}
}

• J. Osca, B. Sor'ee
• Published 8 July 2021
• Physics
• Journal of Applied Physics

We investigate the torque field and skyrmion movement at an interface between a ferromagnet hosting a skyrmion and a material with strong spin-orbit interaction. We analyze both semiconductor materials and topological insulators using a Hamiltonian model that includes a linear term. The spin torque inducing current is considered to flow in the single band limit therefore a quantum model of current is used. Skyrmion movement due spin transfer torque proves to be more difficult in presence of spin orbit interaction in the case where only interface in-plane currents are present. However, edge effects in narrow nanowires can be used to drive the skyrmion movement and to exert a limited control on its movement direction. We also show the differences and similarities between torque fields due to electric current in the many and in the single band limits.