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PreprintarXiv licencearXiv

Current- and field-driven domain wall dynamics and chirality switching in a planar helimagnet

  • Roman Teslia
  • Oleksiy Kolezhuk
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Abstract

We study the effect of electric current and magnetic field on the dynamics of chirality in a helimagnet with a strong easy-plane anisotropy. Using a continuum theory, derived for a quasi-one-dimensional frustrated ferromagnet close to the Lifshitz point, we show that a domain wall connecting domains with opposite chiralities can be driven by the current via the dissipative (non-adiabatic) component of the spin-transfer torque. Further, it is demonstrated that the adiabatic part of the torque in the presence of a magnetic field breaks the symmetry of the effective magnetic potential energy with respect to the chirality. We show that the leading symmetry-breaking term arises in the third order in the magnetization gradient, and derive the conditions of the chirality switching. Our conclusions are supported by numerical spin-lattice simulations.

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Cite

BibTeXRIS
BibTeX
@misc{teslia2026current,
  title = {{Current- and field-driven domain wall dynamics and chirality switching in a planar helimagnet}},
  author = {Roman Teslia and Oleksiy Kolezhuk},
  howpublished = {arXiv},
  year = {2026},
  month = jul,
  doi = {10.48550/arxiv.2607.23252},
  eprint = {2607.23252},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.23252},
}
RIS
TY  - UNPB
TI  - Current- and field-driven domain wall dynamics and chirality switching in a planar helimagnet
AU  - Roman Teslia
AU  - Oleksiy Kolezhuk
PY  - 2026
DA  - 2026/07/25
PB  - arXiv
DO  - 10.48550/arxiv.2607.23252
UR  - https://arxiv.org/abs/2607.23252
AB  - We study the effect of electric current and magnetic field on the dynamics of chirality in a helimagnet with a strong easy-plane anisotropy. Using a continuum theory, derived for a quasi-one-dimensional frustrated ferromagnet close to the Lifshitz point, we show that a domain wall connecting domains with opposite chiralities can be driven by the current via the dissipative (non-adiabatic) component of the spin-transfer torque. Further, it is demonstrated that the adiabatic part of the torque in the presence of a magnetic field breaks the symmetry of the effective magnetic potential energy with respect to the chirality. We show that the leading symmetry-breaking term arises in the third order in the magnetization gradient, and derive the conditions of the chirality switching. Our conclusions are supported by numerical spin-lattice simulations.
ER  -