title: Laser-Induced Spatiotemporal Dynamics of Magnetic Films.
abstract: We present a theory for the coherent magnetization dynamics induced by a focused ultrafast laser beam in magnetic films, taking into account nonthermal (inverse Faraday effect) and thermal (heating) actuation. The dynamic conversion between spin waves and phonons is induced by the magnetoelastic coupling that allows efficient propagation of angular momentum. The anisotropy of the magnetoelastic coupling renders characteristic angle dependences of the magnetization propagation that are strikingly different for thermal and nonthermal actuation.
authors.affiliation: Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
authors.forename: Ka
authors.initials: K
authors.lastname: Shen
authors.affiliation: Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.|Institute for Materials Research and WPI-AIMR, Tohoku University, Sendai 980-8577, Japan.
authors.forename: Gerrit E W
authors.initials: GE
authors.lastname: Bauer