Lenz, K.; Wende, Heiko; Kuch, W.; Baberschke, K.; Nagy, K.; Jánossy, A.:
Two-magnon scattering and viscous Gilbert damping in ultrathin ferromagnets
2006
In: Physical Review B (aktuelle Jahrgänge), Band 73 (2006), S. 144424-1 - 144424-6
Artikel/Aufsatz in Zeitschrift2006Physik
Titel:
Two-magnon scattering and viscous Gilbert damping in ultrathin ferromagnets
Autor(in):
Lenz, K.; Wende, HeikoLSF; Kuch, W.; Baberschke, K.; Nagy, K.; Jánossy, A.
Erscheinungsjahr
2006

Abstract:

Ferromagnetic resonance experiments of magnetic nanostructures over a large frequency range from 1 to 225 GHz are presented. We find unambiguous evidence for a nonlinear frequency dependence of the linewidth. The viscous Gilbert damping and two-magnon scattering are clearly separated. Both angular and frequency dependent measurements give a transverse scattering rate within the magnetic subsystem of the order of 109 s–1, whereas the longitudinal Gilbert relaxation into the thermal bath is one to two orders of magnitude smaller.