Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-04-24
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
22 pages, 9 figures
Scientific paper
Ferromagnetic resonance in thin films is analyzed under the influence of spatiotemporal feedback effects. The equation of motion for the magnetization dynamics is nonlocal in both space and time and includes isotropic, anisotropic and dipolar energy contributions as well as the conserved Gilbert- and the non-conserved Bloch-damping. We derive an analytical expression for the peak-to-peak linewidth. It consists of four separate parts originated by Gilbert damping, Bloch-damping, a mixed Gilbert-Bloch component and a contribution arising from retardation. In an intermediate frequency regime the results are comparable with the commonly used Landau-Lifshitz-Gilbert theory combined with two-magnon processes. Retardation effects together with Gilbert damping lead to a linewidth the frequency dependence of which becomes strongly nonlinear. The relevance and the applicability of our approach to ferromagnetic resonance experiments is discussed.
Bose Thomas
Trimper Steffen
No associations
LandOfFree
Nonlocal feedback in ferromagnetic resonance 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 Nonlocal feedback in ferromagnetic resonance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlocal feedback in ferromagnetic resonance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-519848