Cargando…

Discontinuous properties of current-induced magnetic domain wall depinning

The current-induced motion of magnetic domain walls (DWs) confined to nanostructures is of great interest for fundamental studies as well as for technological applications in spintronic devices. Here, we present magnetic images showing the depinning properties of pulse-current-driven domain walls in...

Descripción completa

Detalles Bibliográficos
Autores principales: Hu, X. F., Wu, J., Niu, D. X., Chen, L., Morton, S. A., Scholl, A., Huang, Z. C., Zhai, Y., Zhang, W., Will, I., Xu, Y. B., Zhang, R., van der Laan, G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3812652/
https://www.ncbi.nlm.nih.gov/pubmed/24170087
http://dx.doi.org/10.1038/srep03080
_version_ 1782288996718608384
author Hu, X. F.
Wu, J.
Niu, D. X.
Chen, L.
Morton, S. A.
Scholl, A.
Huang, Z. C.
Zhai, Y.
Zhang, W.
Will, I.
Xu, Y. B.
Zhang, R.
van der Laan, G.
author_facet Hu, X. F.
Wu, J.
Niu, D. X.
Chen, L.
Morton, S. A.
Scholl, A.
Huang, Z. C.
Zhai, Y.
Zhang, W.
Will, I.
Xu, Y. B.
Zhang, R.
van der Laan, G.
author_sort Hu, X. F.
collection PubMed
description The current-induced motion of magnetic domain walls (DWs) confined to nanostructures is of great interest for fundamental studies as well as for technological applications in spintronic devices. Here, we present magnetic images showing the depinning properties of pulse-current-driven domain walls in well-shaped Permalloy nanowires obtained using photoemission electron microscopy combined with x-ray magnetic circular dichroism. In the vicinity of the threshold current density (J(th) = 4.2 × 10(11) A.m(−2)) for the DW motion, discontinuous DW depinning and motion have been observed as a sequence of “Barkhausen jumps”. A one-dimensional analytical model with a piecewise parabolic pinning potential has been introduced to reproduce the DW hopping between two nearest neighbour sites, which reveals the dynamical nature of the current-driven DW motion in the depinning regime.
format Online
Article
Text
id pubmed-3812652
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-38126522013-10-30 Discontinuous properties of current-induced magnetic domain wall depinning Hu, X. F. Wu, J. Niu, D. X. Chen, L. Morton, S. A. Scholl, A. Huang, Z. C. Zhai, Y. Zhang, W. Will, I. Xu, Y. B. Zhang, R. van der Laan, G. Sci Rep Article The current-induced motion of magnetic domain walls (DWs) confined to nanostructures is of great interest for fundamental studies as well as for technological applications in spintronic devices. Here, we present magnetic images showing the depinning properties of pulse-current-driven domain walls in well-shaped Permalloy nanowires obtained using photoemission electron microscopy combined with x-ray magnetic circular dichroism. In the vicinity of the threshold current density (J(th) = 4.2 × 10(11) A.m(−2)) for the DW motion, discontinuous DW depinning and motion have been observed as a sequence of “Barkhausen jumps”. A one-dimensional analytical model with a piecewise parabolic pinning potential has been introduced to reproduce the DW hopping between two nearest neighbour sites, which reveals the dynamical nature of the current-driven DW motion in the depinning regime. Nature Publishing Group 2013-10-30 /pmc/articles/PMC3812652/ /pubmed/24170087 http://dx.doi.org/10.1038/srep03080 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/3.0/ This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/
spellingShingle Article
Hu, X. F.
Wu, J.
Niu, D. X.
Chen, L.
Morton, S. A.
Scholl, A.
Huang, Z. C.
Zhai, Y.
Zhang, W.
Will, I.
Xu, Y. B.
Zhang, R.
van der Laan, G.
Discontinuous properties of current-induced magnetic domain wall depinning
title Discontinuous properties of current-induced magnetic domain wall depinning
title_full Discontinuous properties of current-induced magnetic domain wall depinning
title_fullStr Discontinuous properties of current-induced magnetic domain wall depinning
title_full_unstemmed Discontinuous properties of current-induced magnetic domain wall depinning
title_short Discontinuous properties of current-induced magnetic domain wall depinning
title_sort discontinuous properties of current-induced magnetic domain wall depinning
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3812652/
https://www.ncbi.nlm.nih.gov/pubmed/24170087
http://dx.doi.org/10.1038/srep03080
work_keys_str_mv AT huxf discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT wuj discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT niudx discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT chenl discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT mortonsa discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT scholla discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT huangzc discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT zhaiy discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT zhangw discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT willi discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT xuyb discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT zhangr discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning
AT vanderlaang discontinuouspropertiesofcurrentinducedmagneticdomainwalldepinning