Thermally assisted Skyrmion drag in a nonuniform electric field
arXiv:1902.04432 · doi:10.1103/PhysRevB.99.064426
Abstract
Magnetic skyrmions are topologically protected excitations of the magnetization vector field with promising applications in spintronics and spin-caloritronics, particularly due to their high mobility. Skyrmions can be steered by a spin-polarized charge current or by exposure to a magnonic spin current. Here, we propose a further method for driving skyrmions by applying an inhomogeneous electric field and a homogeneous thermal bias. We show that the inhomogeneous electric torque leads to an efficient skyrmionic drag which can be thermally assisted as to enhance the skyrmion velocity. The calculations and analysis are limited to insulating samples; for conducting materials the influence of the inhomogeneous electric field on the charge carriers need to be taken also into account.
to appear in Phys. Rev. B
References in corpus (9)
- Spin current and magneto-electric effect in non-collinear magnets
- Theory of current-driven motion of Skyrmions and spirals in helical magnets
- Theory of magnon-driven spin Seebeck effect
- Thermally Driven Ratchet Motion of Skyrmion Microcrystal and Topological Magnon Hall Effect
- Magnon-skyrmion scattering in chiral magnets
- Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
- Capturing of a Magnetic Skyrmion with a Hole
- Thermally induced magnonic spin current, thermomagnonic torques and domain wall dynamics in the presence of Dzyaloshinskii-Moriya interaction
- Conversion of electronic to magnonic spin current at heavy-metal magnetic-insulator interface