Journal
COMPTES RENDUS PHYSIQUE
Volume 14, Issue 8, Pages 651-666Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crhy.2013.08.001
Keywords
Magnetic films; Wall dynamics; Creep; Depinning; Disorder
Funding
- French-Argentine project ECOS-Sud [A12E03]
- French project DIM C'Nano IdF
- University of Western Australia
- Australian Research Council's Discovery Early Career Researcher Award scheme [DE120100155]
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The motion of elastic interfaces in disordered media is a broad topic relevant to many branches of physics. Field-driven magnetic domain wall motion in ultrathin ferromagnetic Pt/Co/Pt films can be well interpreted within the framework of theories developed to describe elastic interface dynamics in the presence of weak disorder. Indeed, the three theoretically predicted dynamic regimes of creep, depinning, and flow have all been directly evidenced in this model experimental system. We discuss these dynamic regimes and demonstrate how field-driven creep can be controlled not only by temperature and pinning, but also via interactions with magnetic entities located inside or outside the magnetic layer. Consequences of confinement effects in nano-devices are briefly reviewed, as some recent results on domain wall motion driven by an electric current or assisted by an electric field. Finally new theoretical developments and perspectives are discussed. (C) 2013 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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