Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2010-08-27
Kammerer, M. et al. Magnetic vortex core reversal by excitation of spin waves. Nat. Commun. 2:279 doi: 10.1038/ncomms1277 (201
Physics
Condensed Matter
Other Condensed Matter
Minor corrections and polishing of previous version
Scientific paper
10.1038/ncomms1277
Micron-sized magnetic platelets in the flux closed vortex state are characterized by an in-plane curling magnetization and a nanometer-sized perpendicularly magnetized vortex core. Having the simplest non-trivial configuration, these objects are of general interest to micromagnetics and may offer new routes for spintronics applications. Essential progress in the understanding of nonlinear vortex dynamics was achieved when low-field core toggling by excitation of the gyrotropic eigenmode at sub-GHz frequencies was established. At frequencies more than an order of magnitude higher vortex state structures possess spin wave eigenmodes arising from the magneto-static interaction. Here we demonstrate experimentally that the unidirectional vortex core reversal process also occurs when such azimuthal modes are excited. These results are confirmed by micromagnetic simulations which clearly show the selection rules for this novel reversal mechanism. Our analysis reveals that for spin wave excitation the concept of a critical velocity as the switching condition has to be modified.
Back Christian
Curcic Michael
Kammerer Matthias
Noske Matthias
Schuetz Gisela
No associations
LandOfFree
Magnetic Vortex Core Reversal by Excitation of Spin Waves does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic Vortex Core Reversal by Excitation of Spin Waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic Vortex Core Reversal by Excitation of Spin Waves will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-331763