Wide-range wavevector selectivity of magnon gases in Brillouin light scattering spectroscopy
- 1 July 2010
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 81 (7) , 073902
Abstract
Brillouin light scattering spectroscopy is a powerful technique for the study of fast magnetization dynamics with both frequency and wavevector resolutions. Here, we report on a distinct improvement of this spectroscopic technique toward two-dimensional wide-range wavevector selectivity in a backward scattering geometry. Spin-wave wavevectors oriented perpendicularly to the bias magnetic field are investigated by tilting the sample within the magnet gap. Wavevectors which are oriented parallel to the applied magnetic field are analyzed by turning the entire setup, including the magnet system. The setup features a wide selectivity of wavevectors up to 2.04×105 rad/cm for both orientations, and allows selecting and measuring wavevectors of dipole- and exchange-dominated spin waves of any orientation to the magnetization simultaneously.Keywords
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This publication has 21 references indexed in Scilit:
- Microscopic spin-wave theory for yttrium-iron garnet filmsThe European Physical Journal B, 2009
- Nonlinear Propagation of Spin Waves in Microscopic Magnetic StripesPhysical Review Letters, 2009
- Three-magnon splitting and confluence processes for spin-wave excitations in yttrium iron garnet films: Wave vector selective Brillouin light scattering measurements and analysisPhysical Review B, 2009
- Magnon Kinetics and Bose-Einstein Condensation Studied in Phase SpacePhysical Review Letters, 2008
- Modification of the thermal spin-wave spectrum in a Ni81Fe19stripe by a domain wallJournal of Physics D: Applied Physics, 2008
- Brillouin light scattering from layered magnetic structures2007
- Bose–Einstein condensation of quasi-equilibrium magnons at room temperature under pumpingNature, 2006
- Brillouin light scattering studies of confined spin waves: linear and nonlinear confinementPhysics Reports, 2001
- Butterfly curves and critical modes for second-order spin-wave instability processes in yttrium iron garnet filmsJournal of Applied Physics, 1996
- Measurement of spin wave instability magnon distributions for subsidiary absorption in yttrium iron garnet films by Brillouin light scatteringPhysical Review Letters, 1994