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All-electrical deterministic single domain wall generation for on-chip applications

Controlling domain wall (DW) generation and dynamics behaviour in ferromagnetic nanowire is critical to the engineering of domain wall-based non-volatile logic and magnetic memory devices. Previous research showed that DW generation suffered from a random or stochastic nature and that makes the real...

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Autores principales: Guite, Chinkhanlun, Kerk, I. S., Sekhar, M. Chandra, Ramu, M., Goolaup, S., Lew, W. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264026/
https://www.ncbi.nlm.nih.gov/pubmed/25500734
http://dx.doi.org/10.1038/srep07459
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author Guite, Chinkhanlun
Kerk, I. S.
Sekhar, M. Chandra
Ramu, M.
Goolaup, S.
Lew, W. S.
author_facet Guite, Chinkhanlun
Kerk, I. S.
Sekhar, M. Chandra
Ramu, M.
Goolaup, S.
Lew, W. S.
author_sort Guite, Chinkhanlun
collection PubMed
description Controlling domain wall (DW) generation and dynamics behaviour in ferromagnetic nanowire is critical to the engineering of domain wall-based non-volatile logic and magnetic memory devices. Previous research showed that DW generation suffered from a random or stochastic nature and that makes the realization of DW based device a challenging task. Conventionally, stabilizing a Néel DW requires a long pulsed current and the assistance of an external magnetic field. Here, we demonstrate a method to deterministically produce single DW without having to compromise the pulse duration. No external field is required to stabilize the DW. This is achieved by controlling the stray field magnetostatic interaction between a current-carrying strip line generated DW and the edge of the nanowire. The natural edge-field assisted domain wall generation process was found to be twice as fast as the conventional methods and requires less current density. Such deterministic DW generation method could potentially bring DW device technology, a step closer to on-chip application.
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spelling pubmed-42640262014-12-16 All-electrical deterministic single domain wall generation for on-chip applications Guite, Chinkhanlun Kerk, I. S. Sekhar, M. Chandra Ramu, M. Goolaup, S. Lew, W. S. Sci Rep Article Controlling domain wall (DW) generation and dynamics behaviour in ferromagnetic nanowire is critical to the engineering of domain wall-based non-volatile logic and magnetic memory devices. Previous research showed that DW generation suffered from a random or stochastic nature and that makes the realization of DW based device a challenging task. Conventionally, stabilizing a Néel DW requires a long pulsed current and the assistance of an external magnetic field. Here, we demonstrate a method to deterministically produce single DW without having to compromise the pulse duration. No external field is required to stabilize the DW. This is achieved by controlling the stray field magnetostatic interaction between a current-carrying strip line generated DW and the edge of the nanowire. The natural edge-field assisted domain wall generation process was found to be twice as fast as the conventional methods and requires less current density. Such deterministic DW generation method could potentially bring DW device technology, a step closer to on-chip application. Nature Publishing Group 2014-12-12 /pmc/articles/PMC4264026/ /pubmed/25500734 http://dx.doi.org/10.1038/srep07459 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Guite, Chinkhanlun
Kerk, I. S.
Sekhar, M. Chandra
Ramu, M.
Goolaup, S.
Lew, W. S.
All-electrical deterministic single domain wall generation for on-chip applications
title All-electrical deterministic single domain wall generation for on-chip applications
title_full All-electrical deterministic single domain wall generation for on-chip applications
title_fullStr All-electrical deterministic single domain wall generation for on-chip applications
title_full_unstemmed All-electrical deterministic single domain wall generation for on-chip applications
title_short All-electrical deterministic single domain wall generation for on-chip applications
title_sort all-electrical deterministic single domain wall generation for on-chip applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264026/
https://www.ncbi.nlm.nih.gov/pubmed/25500734
http://dx.doi.org/10.1038/srep07459
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