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}
}
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… 
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References

SHOWING 1-10 OF 31 REFERENCES

Skyrmion motion induced by voltage-controlled in-plane strain gradients

Micromagnetic simulations are used to investigate the motion of magnetic skyrmions in an in-plane strain gradient. The skyrmion diameter and energy are found to depend on the strain, which leads to a

Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures.

It is demonstrated by numerical investigations that an isolated skyrmion can be a stable configuration in a nanostructure, can be locally nucleated by injection of spin-polarized current, and can be displaced by current-induced spin torques, even in the presence of large defects.

Theory of current-driven motion of Skyrmions and spirals in helical magnets

We study theoretically the dynamics of the spin textures, i.e., Skyrmion crystal (SkX) and spiral structure (SS), in two-dimensional helical magnets under external current. By numerically solving the

Motion of a skyrmionium driven by spin wave

A skyrmionium is composed of two skyrmions with opposite skyrmion numbers and different sizes in the same track. In recent years, the motion of a skyrmionium driven by spin-polarized current has been

Theory of skyrmions in bilayer systems

The colossal spin-transfer-torque effect of bound skyrmion pair on antiferromagnetically coupled bilayer systems is found and the dynamics depends sensitively on the sign of DM interactions, which can be well described by Thiele equation.

Magnetic skyrmions: advances in physics and potential applications

Magnetic skyrmions are small swirling topological defects in the magnetization texture. Their stabilization and dynamics depend strongly on their topological properties. In most cases, they are

Gateable Skyrmion Transport via Field-induced Potential Barrier Modulation

It is shown that skyrmions can be depinned much more easily when their driving force is oriented against the pinning site rather that the intuitive option of being oriented away, and that the sameskyrmion compression can be recreated by applying either a magnetic or electric field.

A theory on skyrmion size

A magnetic skyrmion is a topological object consisting of a skyrmion core, an outer domain, and a wall that separates the skyrmion core from the outer domain. The skyrmion size and wall width are two

Noncollinear spintronics and electric-field control: a review

Abstract Our world is composed of various materials with different structures, where spin structures have been playing a pivotal role in spintronic devices of the contemporary information technology.

Skyrmion Lattice in a Chiral Magnet

This study experimentally establishes magnetic materials lacking inversion symmetry as an arena for new forms of crystalline order composed of topologically stable spin states in the chiral itinerant-electron magnet MnSi.