Print Email Facebook Twitter Theory of spin and lattice wave dynamics excited by focused laser pulses Title Theory of spin and lattice wave dynamics excited by focused laser pulses Author Shen, K. (TU Delft QN/Bauer Group; Beijing Normal University; Kavli institute of nanoscience Delft) Bauer, G.E. (TU Delft QN/Bauer Group; Kavli institute of nanoscience Delft; Tohoku University) Date 2018 Abstract We develop a theory of spin wave dynamics excited by ultrafast focused laser pulses in a magnetic film. We take into account both the 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. Subject magnetoelasticitymagnonsphononspump-and-probespin waves dynamics To reference this document use: http://resolver.tudelft.nl/uuid:fcdb5360-9936-47d3-bcbe-00524e2071d2 DOI https://doi.org/10.1088/1361-6463/aabd68 Embargo date 2019-05-11 ISSN 0022-3727 Source Journal of Physics D: Applied Physics, 51 (22) Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2018 K. Shen, G.E. Bauer Files PDF 1802.00178.pdf 3.61 MB Close viewer /islandora/object/uuid:fcdb5360-9936-47d3-bcbe-00524e2071d2/datastream/OBJ/view