Answers are grounded in this paper and cite their sources.
We have observed the propagation of spin waves and spin-wave packets in 20-nm-thick Permalloy films upon microwave excitation by means of time-resolved scanning Kerr microscopy. Spin waves can be detected up to 800.3em0exμm away from the driving coplanar strip line. In doing so, we were able to directly determine the phase velocities, dispersion relations and group velocities for different geometries of an externally applied in-plane magnetic field. In addition, we report on the direct optical observation of spin-wave interference with lateral and time (phase) resolution.
No takes yet. Share an insight, caveat, or question.
Perzlmaier et al. (2008) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: