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Effect of boundary-induced chirality on magnetic textures in thin films

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Abstract
In the quest for miniaturizing magnetic devices, the effects of boundaries and surfaces become increasingly important. Here we show how the recently predicted boundary-induced Dzyaloshinskii-Moriya interaction (DMI) affects the magnetization of ferromagnetic films with a C-infinity v symmetry and a perpendicular magnetic anisotropy. For an otherwise uniformly magnetized film, we find a surface twist when the magnetization in the bulk is canted by an in-plane external field. This twist at the surfaces caused by the boundary-induced DMI differs from the common canting caused by internal DMI observed at the edges of a chiral magnet. Furthermore, we find that the surface twist due to the boundary-induced DMI strongly affects the width of the domain wall at the surfaces. We also find that the skyrmion radius increases in the depth of the film, with the average size of the skyrmion increasing with boundary-induced DMI. This increase suggests that the boundary-induced DMI contributes to the stability of the skyrmion.
Keywords
DOMAIN-WALLS, SKYRMION, TORQUE

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MLA
Mulkers, Jeroen, et al. “Effect of Boundary-Induced Chirality on Magnetic Textures in Thin Films.” PHYSICAL REVIEW B, vol. 98, no. 6, 2018, doi:10.1103/physrevb.98.064429.
APA
Mulkers, J., Hals, K. M., Leliaert, J., Milošević, M. V., Van Waeyenberge, B., & Everschor-Sitte, K. (2018). Effect of boundary-induced chirality on magnetic textures in thin films. PHYSICAL REVIEW B, 98(6). https://doi.org/10.1103/physrevb.98.064429
Chicago author-date
Mulkers, Jeroen, Kjetil MD Hals, Jonathan Leliaert, Milorad V Milošević, Bartel Van Waeyenberge, and Karin Everschor-Sitte. 2018. “Effect of Boundary-Induced Chirality on Magnetic Textures in Thin Films.” PHYSICAL REVIEW B 98 (6). https://doi.org/10.1103/physrevb.98.064429.
Chicago author-date (all authors)
Mulkers, Jeroen, Kjetil MD Hals, Jonathan Leliaert, Milorad V Milošević, Bartel Van Waeyenberge, and Karin Everschor-Sitte. 2018. “Effect of Boundary-Induced Chirality on Magnetic Textures in Thin Films.” PHYSICAL REVIEW B 98 (6). doi:10.1103/physrevb.98.064429.
Vancouver
1.
Mulkers J, Hals KM, Leliaert J, Milošević MV, Van Waeyenberge B, Everschor-Sitte K. Effect of boundary-induced chirality on magnetic textures in thin films. PHYSICAL REVIEW B. 2018;98(6).
IEEE
[1]
J. Mulkers, K. M. Hals, J. Leliaert, M. V. Milošević, B. Van Waeyenberge, and K. Everschor-Sitte, “Effect of boundary-induced chirality on magnetic textures in thin films,” PHYSICAL REVIEW B, vol. 98, no. 6, 2018.
@article{8572526,
  abstract     = {{In the quest for miniaturizing magnetic devices, the effects of boundaries and surfaces become increasingly important. Here we show how the recently predicted boundary-induced Dzyaloshinskii-Moriya interaction (DMI) affects the magnetization of ferromagnetic films with a C-infinity v symmetry and a perpendicular magnetic anisotropy. For an otherwise uniformly magnetized film, we find a surface twist when the magnetization in the bulk is canted by an in-plane external field. This twist at the surfaces caused by the boundary-induced DMI differs from the common canting caused by internal DMI observed at the edges of a chiral magnet. Furthermore, we find that the surface twist due to the boundary-induced DMI strongly affects the width of the domain wall at the surfaces. We also find that the skyrmion radius increases in the depth of the film, with the average size of the skyrmion increasing with boundary-induced DMI. This increase suggests that the boundary-induced DMI contributes to the stability of the skyrmion.}},
  articleno    = {{064429}},
  author       = {{Mulkers, Jeroen and Hals, Kjetil MD and Leliaert, Jonathan and Milošević, Milorad V and Van Waeyenberge, Bartel and Everschor-Sitte, Karin}},
  issn         = {{2469-9950}},
  journal      = {{PHYSICAL REVIEW B}},
  keywords     = {{DOMAIN-WALLS,SKYRMION,TORQUE}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{9}},
  title        = {{Effect of boundary-induced chirality on magnetic textures in thin films}},
  url          = {{http://doi.org/10.1103/physrevb.98.064429}},
  volume       = {{98}},
  year         = {{2018}},
}

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