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Journal Article

Tunable geometrical frustration in magnonic vortex crystals

MPS-Authors

Hänze,  M.
Max Planck Society;

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Citation

Behncke, C., Adolff, C., Wintz, S., Hänze, M., Schulte, B., Weigand, M., et al. (2018). Tunable geometrical frustration in magnonic vortex crystals. Scientific Reports, 8: 186.


Cite as: https://hdl.handle.net/21.11116/0000-000E-E000-4
Abstract
A novel approach to investigate geometrical frustration is introduced using two-dimensional magnonic vortex crystals. The frustration of the crystal can be manipulated and turned on and off dynamically on the timescale of milliseconds. The vortices are studied using scanning transmission x-ray microscopy and ferromagnetic resonance spectroscopy. They are arranged analogous to the nanomagnets in artificial spin-ice systems. The polarization state of the vortices is tuned in a way that geometrical frustration arises. We demonstrate that frustrated polarization states and non-frustrated states can be tuned to the crystal by changing the frequency of the state formation process.