Linear and nonlinear phase accumulation of backward volume magnetostatic spin waves in yttrium-iron-garnet spin-wave waveguidesT. Schneider1, A. A. Serga1, B. Hillebrands1 and M. P. Kostylev2
1 Fachbereich Physik, TU Kaiserslautern - Erwin-Schrödinger-Str. 56, 67663 Kaiserslautern, Germany
2 School of Physics, M013, University of Western Australia - 35 Stirling Highway, Crawley, WA 6009, Australia
received 20 October 2006; accepted in final form 5 January 2007; published March 2007
published online 19 February 2007
Using the newly developed phase-sensitive Brillouin light scattering spectroscopy technique we investigate the nonlinear influence of the spin-wave amplitude on the spin-wave phase. Nonlinear phase splitting between the peak and the tail of nonlinear spin-wave pulses was observed for dipolar-dominated spin-wave pulses propagating in yttrium-iron-garnet spin-wave waveguides. A model to describe this effect is presented.
75.30.Ds - Spin waves.
78.35.+c - Brillouin and Rayleigh scattering; other light scattering.
05.45.-a - Nonlinear dynamics and chaos.
© Europhysics Letters Association 2007