title: Synchronous precessional motion of multiple domain walls in a ferromagnetic nanowire by perpendicular field pulses.
abstract: Magnetic storage and logic devices based on magnetic domain wall motion rely on the precise and synchronous displacement of multiple domain walls. The conventional approach using magnetic fields does not allow for the synchronous motion of multiple domains. As an alternative method, synchronous current-induced domain wall motion was studied, but the required high-current densities prevent widespread use in devices. Here we demonstrate a radically different approach: we use out-of-plane magnetic field pulses to move in-plane domains, thus combining field-induced magnetization dynamics with the ability to move neighbouring domain walls in the same direction. Micromagnetic simulations suggest that synchronous permanent displacement of multiple magnetic walls can be achieved by using transverse domain walls with identical chirality combined with regular pinning sites and an asymmetric pulse. By performing scanning transmission X-ray microscopy, we are able to experimentally demonstrate in-plane magnetized domain wall motion due to out-of-plane magnetic field pulses.
authors.affiliation: 1] Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany [2] Department of Applied Physics, Center for NanoMaterials, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: June-Seo
authors.initials: JS
authors.lastname: Kim
authors.affiliation: 1] Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany [2] Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
authors.forename: Mohamad-Assaad
authors.initials: MA
authors.lastname: Mawass
authors.affiliation: 1] Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany [2] Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
authors.forename: André
authors.initials: A
authors.lastname: Bisig
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Krüger
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany.
authors.forename: Robert M
authors.initials: RM
authors.lastname: Reeve
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany.
authors.forename: Tomek
authors.initials: T
authors.lastname: Schulz
authors.affiliation: 1] Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany [2] Institut für Optik und Atomare Physik, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany.
authors.forename: Felix
authors.initials: F
authors.lastname: Büttner
authors.affiliation: Department of Physics, Inha University, Incheon 402-751, Republic of Korea.
authors.forename: Jungbum
authors.initials: J
authors.lastname: Yoon
authors.affiliation: Department of Physics, Inha University, Incheon 402-751, Republic of Korea.
authors.forename: Chun-Yeol
authors.initials: CY
authors.lastname: You
authors.affiliation: Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Weigand
authors.affiliation: Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
authors.forename: Hermann
authors.initials: H
authors.lastname: Stoll
authors.affiliation: Max Planck Institute for Intelligent Systems, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
authors.forename: Gisela
authors.initials: G
authors.lastname: Schütz
authors.affiliation: Department of Applied Physics, Center for NanoMaterials, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: Henk J M
authors.initials: HJ
authors.lastname: Swagten
authors.affiliation: Department of Applied Physics, Center for NanoMaterials, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands.
authors.forename: Bert
authors.initials: B
authors.lastname: Koopmans
authors.affiliation: 1] Institut für Optik und Atomare Physik, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany [2] Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Eisebitt
authors.affiliation: Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany.
authors.forename: Mathias
authors.initials: M
authors.lastname: Kläui