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arXiv · 1701.05137

Gauge fields and related forces in antiferromagnetic solitons

Sayak Dasgupta·Se Kwon Kim·Oleg Tchernyshyov
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Abstract

We derive equations of motion for topological solitons in antiferromagnets under the combined action of perturbations such as an external magnetic field and torque-generating electrical current. Aside from conservative forces, such perturbations generate an effective "magnetic field" exerting a gyrotropic force on the soliton and an induced "electric field" if the perturbation is time-dependent. We apply the general formalism to the cases of a domain wall and of a vortex. An antiferromagnetic vortex can be effectively moved by combined applications of a magnetic field and an electric current.

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Sayak Dasgupta, Se Kwon Kim, Oleg Tchernyshyov. 2017-01-18. Gauge fields and related forces in antiferromagnetic solitons. https://doi.org/10.1103/physrevb.95.220407

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