Chiral spin structure of electron gas in systems with magnetic skyrmions
Abstract
The theoretical study considers chiral spin textures induced in a 2D electron gas (2DEG) by magnetic skyrmions. We calculate the electron gas spin density as a linear response to the exchange interaction between the 2DEG and the magnetization field of a magnetic skyrmion. Two physically distinct regimes occur. When the size of the skyrmion is larger than the inverse Fermi wavevector kF-1, the spin density response follows the magnetization profile of the skyrmion. In the opposite case of a small skyrmion the emerging spin structure of 2DEG has a characteristic size of kF-1 and the response becomes non-local, it can be viewed as chiral Friedel oscillations. At that, the emerging spin structure of the oscillations appears to be more complex than that of the skyrmion itself.
- Publication:
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Journal of Magnetism and Magnetic Materials
- Pub Date:
- July 2020
- DOI:
- 10.1016/j.jmmm.2020.166755
- arXiv:
- arXiv:1911.06761
- Bibcode:
- 2020JMMM..50666755Y
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 6 pages, 7 figures