SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 35: Skyrmions III
MA 35.6: Vortrag
Donnerstag, 30. März 2023, 11:00–11:15, HSZ 04
Manipulation of Skyrmion Helicity in Frustrated Magnets — •Ross Knapman1,2, Timon Tausendpfund1, Sebastián A. Díaz2, and Karin Everschor-Sitte2,3 — 1Institute of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany — 2Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, Germany — 3Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany
Aside from the well-studied mechanisms of the stabilisation of magnetic skyrmions via the Dzyaloshinskii-Moriya interaction, skyrmions can be stabilised with magnetic frustration. [1] In such a system, the helicity becomes a degree of freedom which can be manipulated using externally-applied electric and magnetic fields. [2,3] In our work, we use a Ginzburg-Landau description of the system [4] to model the dynamics of the skyrmion using analytical and numerical approaches. In tuning in the time dependences of the electric and magnetic fields, we can manipulate the energy landscape to induce interesting phenomena, including helicity rotations.
[1] Okubo, T., Chung, S., Kawamura, H., Phys. Rev. Lett. 108, 017206 (2012)
[2] Y., X., Chen, J., Dong, S., New J. Phys. 22, 083032 (2020)
[3] Psaroudaki, C., Panagopoulos, C., Phys. Rev. Lett. 127, 067201 (2021)
[4] Lin, S. Z., Hayami, S., Phys. Rev. B 93, 064430 (2016)