Theory of spin and lattice wave dynamics excited by focused laser pulses
arXiv:1802.00178 · doi:10.1088/1361-6463/aabd68
Abstract
We develop a theory of the spin wave dynamics excited by ultrafast focused laser pulses in a magnetic film. We take into account both volume and surface spin wave modes in the presence of applied, dipolar and magnetic anisotropy fields and include the dependence on laser spot exposure size and magnetic damping. We show that the sound waves generated by local heating by an ultrafast focused laser pulse can excite a wide spectrum of spin waves (on top of a dominant magnon-phonon contribution). Good agreement with recent experiments supports the validity of the model.
arXiv comment7 pages, 5 figures
References in corpus (8)
- Magnon Polarons in the Spin Seebeck Effect
- Magnon-polaron transport in magnetic insulators
- Two magnon bound state causes ultrafast thermally induced magnetisation switching
- Laser-induced spatiotemporal dynamics of magnetic films
- Frequency and wavenumber selective excitation of spin waves through coherent energy transfer from elastic waves
- Parametric frequency mixing in the magneto-elastically driven FMR-oscillator
- Observation of the Inverse Cotton-Mouton Effect
- Phase-resolved Spin-Wave Tomography
Cited by in corpus (5)
- Exciton-Coupled Coherent Magnons in a 2D Semiconductor
- Dipolar spin waves in uniaxial easy-axis antiferromagnets: A natural topological nodal-line semimetal
- Dynamic self-organisation and pattern formation by magnon-polarons
- Time-domain study of coupled collective excitations in quantum materials
- Probing magneto-elastic phenomena through an effective spin-bath coupling model