Mapping magnetization states in ultrathin films with Dzyaloshinskii-Moriya interaction

0509386 - FZÚ 2020 RIV GB eng J - Journal Article
Kisielewski, J. - Kisielewski, M. - Zablotskyy, Vitaliy A. - Dejneka, Alexandr - Maziewski, A.
Mapping magnetization states in ultrathin films with Dzyaloshinskii-Moriya interaction.
New Journal of Physics. Roč. 21, Sep (2019), s. 1-8, č. článku 093022. ISSN 1367-2630. E-ISSN 1367-2630
R&D Projects: GA MŠMT(CZ) EF16_019/0000760
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : thin films * micromagnetic simulations * magnetic skyrmions * chiral magnetization
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.539, year: 2019
Method of publishing: Open access

To succeed in the next generation of magnetic storages, nanomagnetic structures must be engineered to allow modulation of magnetization amplitude and spatial period. We demonstrate computationally how magnetic nanostructures states (domains with narrow wall, skyrmions, spin spirals, conical spin spirals, and in-plane magnetization configuration) can be designed in ultrathin films with a Dzyaloshinskii–Moriya interaction (DMI) by adjusting two material parameters: perpendicular magnetic anisotropy characterized by the quality factor Q, and reduced DMI constant ${ m{Delta }}$. For a broad range of Q and ${ m{Delta }}$ parameters, the magnetization states are mapped in (Q, ${ m{Delta }}$) diagrams and characterized by the periodicity (p) of spatial distribution of magnetization and the mean value of the square of an out-of-plane normalized magnetization component $langle {m}_{z}^{2} angle $.

Permanent Link: http://hdl.handle.net/11104/0300149