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dc.contributor.authorSánchez-Tejerina, Luis
dc.contributor.authorAlejos Ducal, Óscar
dc.contributor.authorRaposo Funcia, Víctor
dc.contributor.authorMartínez Vecino, Eduardo
dc.identifier.citationJournal of Applied Physics 123, 223905 (2018)es_ES
dc.description.abstract[EN]The dynamics of magnetic domain walls along ferromagnetic strips with spatially modulated perpendicular magnetic anisotropy are theoretically studied by means of micromagnetic simulations. Ferromagnetic layers with a periodic sawtooth profile of the anisotropy depict a well-defined set of energy minima where the walls are pinned in the absence of external stimuli, and favor the unidirectional propagation of domain walls. The performance of the current-driven domain wall motion along these ratchet-like systems is compared to the field-driven case. Our study indicates that the current-driven domain wall motion exhibits significant improvements with respect to the field-driven case in terms of bit shifting speed and storage density, and therefore, it is suggested for the development of novel devices. The feasibility of these current-driven ratchet devices is studied by means of realistic micromagnetic simulations and supported by a one-dimensional model updated to take into account the periodic sawthooth anisotropy profile. Finally, the current-driven domain wall motion is also evaluated in systems with a triangular modulation of the anisotropy designed to promote the bidirectional shifting of a series of walls, a functionality that cannot be achieved by magnetic fields.es_ES
dc.description.sponsorshipComisión Europea (P7-PEOPLE-2013-ITN 608031) Gobierno de España (MAT2014-52477-C5-4-P, MAT2017-87072-C4-1-P) Junta de Castilla y Leon (SA090U16)es_ES
dc.publisherAmerican Institute of Physics (College Park, Estados Unidos)es_ES
dc.rightsAttribution 4.0 International
dc.subjectDomain walles_ES
dc.subjectComputational physicses_ES
dc.subjectSpin-orbit torquees_ES
dc.subjectMagnetic memoryes_ES
dc.titleCurrent-driven domain wall motion along ferromagnetic strips with periodically-modulated perpendicular anisotropyes_ES
dc.relation.projectIDP7-PEOPLE-2013-ITN 608031es_ES

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International