Spin Dynamics in Antiferromagnets with Domain Walls and Disclinations

Authors

  • E. G. Galkina Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • V. E. Kireev Institute of Magnetism, Nat. Acad. of Sci. of Ukraine and Ministry of Education and Science of Ukraine
  • R. V. Ovcharov Taras Shevchenko National University of Kyiv, Faculty of Physics
  • R. S. Khymyn Department of Physics, University of Gothenburg
  • B. A. Ivanov Institute of Physics, Nat. Acad. of Sci. of Ukraine, Institute of Magnetism, Nat. Acad. of Sci. of Ukraine and Ministry of Education and Science of Ukraine, Taras Shevchenko National University of Kyiv, Faculty of Physics

DOI:

https://doi.org/10.15407/ujpe65.10.924

Keywords:

antiferromagnet, disclination, spin current

Abstract

The spin dynamics in antiferromagnets with atomic dislocations and dislocation-induced spin disclinations has been discussed. It is shown how the usual sigma-model equation can be used to describe it. The dynamical states with the spatially inhomogeneous spin precession are studied. It is demonstrated that such an internal dynamics of the spin disclinations and the related domain walls can serve as a basis for creating a spin-Hall nanogenerator pumped with a spin current and characterized by a low excitation threshold.

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Published

2020-10-09

How to Cite

Galkina, E. G., Kireev, V. E., Ovcharov, R. V., Khymyn, R. S., & Ivanov, B. A. (2020). Spin Dynamics in Antiferromagnets with Domain Walls and Disclinations. Ukrainian Journal of Physics, 65(10), 924. https://doi.org/10.15407/ujpe65.10.924

Issue

Section

Physics of magnetic phenomena and physics of ferroics