title: Domain wall relaxation, creep, sliding, and switching in superferromagnetic discontinuous Co(80)Fe(20)/Al(2)O3 multilayers.
abstract: The ac susceptibility of a superferromagnetic discontinuous multilayer [Co(80)Fe20(1.4 nm)/Al(2)O3(3 nm)](10) is measured as a function of temperature, frequency, and field amplitude and compared to static and dynamic hysteresis loops. Its properties are successfully mapped onto the predicted [T. Nattermann, V. Pokrovsky, and V. M. Vinokur, Phys. Rev. Lett. 87, 197005 (2001)]] dynamical phase transitions, which link the relaxation, creep, sliding, and switching regimes of pinned domain walls.
authors.affiliation: Laboratorium für Angewandte Physik, Gerhard-Mercator-Universität, Duisburg, D-47048 Duisburg, Germany.
authors.forename: X
authors.initials: X
authors.lastname: Chen
authors.forename: O
authors.initials: O
authors.lastname: Sichelschmidt
authors.forename: W
authors.initials: W
authors.lastname: Kleemann
authors.forename: O
authors.initials: O
authors.lastname: Petracic
authors.forename: Ch
authors.initials: Ch
authors.lastname: Binek
authors.forename: J B
authors.initials: JB
authors.lastname: Sousa
authors.forename: S
authors.initials: S
authors.lastname: Cardoso
authors.forename: P P
authors.initials: PP
authors.lastname: Freitas