title: Time-resolved magnetization dynamics of cross-tie domain walls in permalloy microstructures.
abstract: We report on a picosecond time-resolved x-ray magnetic circular dichroic-photoelectron emission microscopy study of the evolution of the magnetization components of a microstructured permalloy platelet comprising three cross-tie domain walls. A laser-excited photoswitch has been used to apply a triangular 80 Oe, 160 ps magnetic pulse. Micromagnetic calculations agree well with the experimental results, both in time and frequency, illustrating the large angle precession in the magnetic domains with magnetization perpendicular to the applied pulse, and showing how the magnetic vortices revert their core magnetization while the antivortices remain unaffected.
authors.affiliation: Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Miguel
authors.forename: J
authors.initials: J
authors.lastname: Sánchez-Barriga
authors.forename: D
authors.initials: D
authors.lastname: Bayer
authors.forename: J
authors.initials: J
authors.lastname: Kurde
authors.forename: B
authors.initials: B
authors.lastname: Heitkamp
authors.forename: M
authors.initials: M
authors.lastname: Piantek
authors.forename: F
authors.initials: F
authors.lastname: Kronast
authors.forename: M
authors.initials: M
authors.lastname: Aeschlimann
authors.forename: H A
authors.initials: HA
authors.lastname: Dürr
authors.forename: W
authors.initials: W
authors.lastname: Kuch