Chirality-dependent asymmetric vortex core structures in a harmonic excitation mode
| Autor: | Sooseok Lee, Dae-Han Jung, Myeonghwan Kang, Hee-Sung Han, Ki-Suk Lee |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Physics Physics and Astronomy (miscellaneous) Condensed matter physics High Energy Physics::Lattice 02 engineering and technology 021001 nanoscience & nanotechnology Polarization (waves) 01 natural sciences Gyration Vortex Harmonic excitation Magnetization Condensed Matter::Superconductivity 0103 physical sciences 0210 nano-technology Magnetic vortex |
| Zdroj: | Applied Physics Letters. 117:042401 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0010926 |
| Popis: | Chirality of the magnetic vortex plays an essential role in dynamic excitations of the magnetic vortex structure. In a harmonic excitation of the vortex gyrotropic motion, it has been known that the chirality determines its phase to the driving force. From our micromagnetic simulations, we find an additional role of chirality in the harmonic excitation of the vortex gyration. The shear deformation of the three-dimensional structure of the vortex core is determined by the chirality of the vortex. We confirm that this is due to the gyrotropic field. For the same vortex core motion with the same polarization but with opposite chirality, it turns out that the opposite gyrotropic field is formed at the spiral magnetization in the vicinity of the vortex core structure. |
| Databáze: | OpenAIRE |
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