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Proceedings Paper

Correlation between spin structure oscillations and domain wall velocities (presentation video)
Author(s): Andre Bisig; Martin Stärk; Mohamad-Assaad Mawass; Christoforos Moutafis; Jan Rhensius; Jakoba Heidler; Felix Büttner; Matthias Noske; Markus Weigand; Stefan Eisebitt; Tolek Tyliszczak; Bartel van Waeyenberge; Hermann Stoll; Gisela Schütz; Mathias Kläui
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Paper Abstract

Magnetic sensing and logic devices based on the motion of magnetic domain walls rely on the precise and deterministic control of the position and the velocity of individual magnetic domain walls. Varying domain wall velocities have been predicted to result from intrinsic effects such as oscillating domain wall spin structure transformations and extrinsic pinning due to imperfections. We use direct dynamic imaging of the nanoscale spin structure to directly check these predictions. We find a new regime of oscillating domain wall motion even below the Walker breakdown correlated with periodic spin structure changes and we show that the extrinsic pinning from defects in the nanowire only affects slow domain walls.

Paper Details

Date Published: 17 August 2014
PDF: 1 pages
Proc. SPIE 9167, Spintronics VII, 91671Y (17 August 2014); doi: 10.1117/12.2060802
Show Author Affiliations
Andre Bisig, IBM Research - Zürich (Switzerland)
Johannes Gutenberg Univ. Mainz (Germany)
Max-Planck Institut für Intelligente Systeme (Germany)
Martin Stärk, Univ of Konstanz (Germany)
Mohamad-Assaad Mawass, Johannes Gutenberg Univ. Mainz (Germany)
Max Planck Institute for Intelligent Systems (Germany)
Christoforos Moutafis, Paul Scherrer Institute (Switzerland)
Jan Rhensius, Paul Scherrer Institute (Switzerland)
Univ. of Konstanz (Germany)
Jakoba Heidler, Paul Scherrer Institute (Switzerland)
Felix Büttner, Johannes Gutenberg Univ. Mainz (Germany)
Helmholtz-Zentrum Berlin für Materialien und Energie (Germany)
Technische Univ. Berlin (Germany)
Matthias Noske, Max Planck Institute for Intelligent Systems (Germany)
Markus Weigand, Max-Planck Institut für Intelligente Systeme (Germany)
Stefan Eisebitt, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Germany)
Technische Univ. Berlin (Germany)
Tolek Tyliszczak, Lawrence Berkeley National Lab. (United States)
Bartel van Waeyenberge, Ghent Univ. (Belgium)
Hermann Stoll, Max-Planck Institut für Intelligente Systeme (Germany)
Gisela Schütz, Max-Planck Institut für Intelligente Systeme (Germany)
Mathias Kläui, Johannes Gutenberg Univ. Mainz (Germany)
Univ. of Konstanz (Germany)

Published in SPIE Proceedings Vol. 9167:
Spintronics VII
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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