title: Hot-Electron-Induced Ultrafast Demagnetization in Co/Pt Multilayers.
abstract: Using specially engineered structures to tailor the optical absorption in a metallic multilayer, we analyze the magnetization dynamics of a Co/Pt multilayer buried below a thick Cu layer. We demonstrate that hot electrons alone can very efficiently induce ultrafast demagnetization. Simulations based on hot electron ballistic transport implemented within a microscopic model that accounts for local dissipation of angular momentum nicely reproduce the experimental results, ruling out contribution of pure thermal transport.
authors.affiliation: Institut Jean Lamour, CNRS UMR 7198, Universitè de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
authors.forename: N
authors.initials: N
authors.lastname: Bergeard
authors.affiliation: Institut Jean Lamour, CNRS UMR 7198, Universitè de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
authors.forename: M
authors.initials: M
authors.lastname: Hehn
authors.affiliation: Institut Jean Lamour, CNRS UMR 7198, Universitè de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
authors.forename: S
authors.initials: S
authors.lastname: Mangin
authors.affiliation: Institut Jean Lamour, CNRS UMR 7198, Universitè de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
authors.forename: G
authors.initials: G
authors.lastname: Lengaigne
authors.affiliation: Institut Jean Lamour, CNRS UMR 7198, Universitè de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
authors.forename: F
authors.initials: F
authors.lastname: Montaigne
authors.affiliation: Department of Applied Physics, center for NanoMaterials (cNM) Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: M L M
authors.initials: ML
authors.lastname: Lalieu
authors.affiliation: Department of Applied Physics, center for NanoMaterials (cNM) Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: B
authors.initials: B
authors.lastname: Koopmans
authors.affiliation: Institut Jean Lamour, CNRS UMR 7198, Universitè de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
authors.forename: G
authors.initials: G
authors.lastname: Malinowski