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Tunable geometrical frustration in magnonic vortex crystals
Carolin Behncke1, Christian F Adolff2,3, Sebastian Wintz4
1Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstr. 11, 20355, Hamburg, Germany. cbehncke@physnet.uni-hamburg.de.
Scientific Reports
|January 11, 2018
Summary
Researchers dynamically controlled geometrical frustration in 2D magnonic vortex crystals using tunable polarization states. This novel approach allows frustration to be switched on/off rapidly for advanced materials science investigations.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnonics
Background:
- Geometrical frustration in artificial spin-ice systems presents challenges in dynamic control.
- Magnonic vortex crystals offer a tunable platform for exploring magnetic phenomena.
Purpose of the Study:
- To introduce a novel method for investigating geometrical frustration in two-dimensional (2D) magnonic vortex crystals.
- To demonstrate dynamic manipulation of frustration on millisecond timescales.
Main Methods:
- Utilizing scanning transmission x-ray microscopy (STXM) and ferromagnetic resonance spectroscopy (FMRS).
- Arranging magnonic vortices analogously to nanomagnets in artificial spin-ice systems.
- Tuning vortex polarization states to induce and control geometrical frustration.
Main Results:
- Successfully created and manipulated geometrical frustration in 2D magnonic vortex crystals.
- Demonstrated dynamic switching of frustration states on millisecond timescales.
- Showcased the ability to tune between frustrated and non-frustrated states by altering the state formation frequency.
Conclusions:
- The developed approach provides a powerful tool for studying and controlling geometrical frustration.
- 2D magnonic vortex crystals are a promising system for dynamic control of magnetic frustration.
- This work opens avenues for novel applications in tunable magnetic materials and devices.
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