Noncircular skyrmion and its anisotropic response in thin films of chiral magnets under a tilted magnetic field

Lin, Shi-Zeng; Saxena, Avadh

doi:10.1103/PhysRevB.92.180401

Title: Noncircular skyrmion and its anisotropic response in thin films of chiral magnets under a tilted magnetic field

Journal Article · 02 November 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI: https://doi.org/10.1103/PhysRevB.92.180401 · OSTI ID:1255073

Lin, Shi-Zeng ^[1]; Saxena, Avadh ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here we study the equilibrium and dynamical properties of skyrmions in thin films of chiral magnets with oblique magnetic field. The shape of an individual skyrmion is non-circular and the skyrmion density decreases with the tilt angle from the normal of films. As a result, the interaction between two skyrmions depends on the relative angle between them in addition to their separation. The triangular lattice of skyrmions under a perpendicular magnetic field is distorted into a centered rectangular lattice for a tilted magnetic field. For a low skyrmion density, skyrmions form a chain like structure. Lastly, the dynamical response of the non-circular skyrmions depends on the direction of external currents.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1255073

Report Number(s):: LA-UR-15-26477

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 18 Vol. 92; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Determination of chirality and density control of Néel-type skyrmions with in-plane magnetic field Zhang, Senfu; Zhang, Junwei; Wen, Yan Communications Physics, Vol. 1, Issue 1 https://doi.org/10.1038/s42005-018-0040-5	journal	July 2018
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Heisenberg-exchange-free nanoskyrmion mosaic Stepanov, E. A.; Nikolaev, S. A.; Dutreix, C. Journal of Physics: Condensed Matter, Vol. 31, Issue 17 https://doi.org/10.1088/1361-648x/ab02b9	journal	February 2019
The stability of a skyrmion in a nanotube Huo, Xiaohong; Liu, Yan New Journal of Physics, Vol. 21, Issue 9 https://doi.org/10.1088/1367-2630/ab3d89	journal	September 2019
DC spinmotive force from microwave-active resonant dynamics of a skyrmion crystal under a tilted magnetic field Koide, Tatsuya; Takeuchi, Akihito; Mochizuki, Masahito Physical Review B, Vol. 100, Issue 1 https://doi.org/10.1103/physrevb.100.014408	journal	July 2019
Long-wavelength emergent phonons in Bloch skyrmion crystals distorted by exchange anisotropy and tilted magnetic fields Hu, Yangfan Physical Review B, Vol. 100, Issue 14 https://doi.org/10.1103/physrevb.100.144424	journal	October 2019
Skyrmion robustness in noncentrosymmetric magnets with axial symmetry: The role of anisotropy and tilted magnetic fields Leonov, A. O.; Kézsmárki, I. Physical Review B, Vol. 96, Issue 21 https://doi.org/10.1103/physrevb.96.214413	journal	December 2017
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Micromagnetic understanding of the skyrmion Hall angle current dependence in perpendicularly magnetized ferromagnets Tomasello, Riccardo; Giordano, Anna; Chiappini, Stefano Physical Review B, Vol. 98, Issue 22 https://doi.org/10.1103/physrevb.98.224418	journal	December 2018
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Interaction of Individual Skyrmions in Nanostructured Cubic Chiral Magnet Du, H.; Zhao, X.; Rybakov, F. N. arXiv https://doi.org/10.48550/arxiv.1804.02413	text	January 2018
Micromagnetic understanding of the skyrmion Hall angle current dependence in perpendicular magnetized ferromagnets Tomasello, Riccardo; Giordano, Anna; Chiappini, Stefano arXiv https://doi.org/10.48550/arxiv.1808.01476	text	January 2018
Stability of skyrmions in perturbed ferromagnetic chiral magnets Osorio, S. A.; Sturla, M. B.; Rosales, H. D. arXiv https://doi.org/10.48550/arxiv.1811.11666	text	January 2018
Long-wavelength emergent phonons in skyrmion crystals distorted by exchange anisotropy and tilted magnetic fields Hu, Yangfan arXiv https://doi.org/10.48550/arxiv.1905.03987	text	January 2019

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