Direct observation of deterministic domain wall trajectory in magnetic network structures

Controlling the domain wall (DW) trajectory in magnetic network structures is crucial for spin-based device related applications. The understanding of DW dynamics in network structures is also important for study of fundamental properties like observation of magnetic monopoles at room temperature in...

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Main Authors: Sethi, Pankaj, Murapaka, Chandrasekhar, Goolaup, Sarjoosing, Chen, Yun Jie, Leong, Siang Huei, Lew, Wen Siang
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/80735
http://hdl.handle.net/10220/46592
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-807352023-02-28T19:30:04Z Direct observation of deterministic domain wall trajectory in magnetic network structures Sethi, Pankaj Murapaka, Chandrasekhar Goolaup, Sarjoosing Chen, Yun Jie Leong, Siang Huei Lew, Wen Siang School of Physical and Mathematical Sciences Magnetic Properties and Materials Domain Wall DRNTU::Science::Physics Controlling the domain wall (DW) trajectory in magnetic network structures is crucial for spin-based device related applications. The understanding of DW dynamics in network structures is also important for study of fundamental properties like observation of magnetic monopoles at room temperature in artificial spin ice lattice. The trajectory of DW in magnetic network structures has been shown to be chirality dependent. However, the DW chirality periodically oscillates as it propagates a distance longer than its fidelity length due to Walker breakdown phenomenon. This leads to a stochastic behavior in the DW propagation through the network structure. In this study, we show that the DW trajectory can be deterministically controlled in the magnetic network structures irrespective of its chirality by introducing a potential barrier. The DW propagation in the network structure is governed by the geometrically induced potential barrier and pinning strength against the propagation. This technique can be extended for controlling the trajectory of magnetic charge carriers in an artificial spin ice lattice. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2018-11-08T02:38:41Z 2019-12-06T13:57:49Z 2018-11-08T02:38:41Z 2019-12-06T13:57:49Z 2016 Journal Article Sethi, P., Murapaka, C., Goolaup, S., Chen, Y. J., Leong, S. H., & Lew, W. S. (2016). Direct observation of deterministic domain wall trajectory in magnetic network structures. Scientific Reports, 6, 19027-. doi:10.1038/srep19027 https://hdl.handle.net/10356/80735 http://hdl.handle.net/10220/46592 10.1038/srep19027 26754285 en Scientific Reports © 2016 The Authors (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 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 to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 8 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Magnetic Properties and Materials
Domain Wall
DRNTU::Science::Physics
spellingShingle Magnetic Properties and Materials
Domain Wall
DRNTU::Science::Physics
Sethi, Pankaj
Murapaka, Chandrasekhar
Goolaup, Sarjoosing
Chen, Yun Jie
Leong, Siang Huei
Lew, Wen Siang
Direct observation of deterministic domain wall trajectory in magnetic network structures
description Controlling the domain wall (DW) trajectory in magnetic network structures is crucial for spin-based device related applications. The understanding of DW dynamics in network structures is also important for study of fundamental properties like observation of magnetic monopoles at room temperature in artificial spin ice lattice. The trajectory of DW in magnetic network structures has been shown to be chirality dependent. However, the DW chirality periodically oscillates as it propagates a distance longer than its fidelity length due to Walker breakdown phenomenon. This leads to a stochastic behavior in the DW propagation through the network structure. In this study, we show that the DW trajectory can be deterministically controlled in the magnetic network structures irrespective of its chirality by introducing a potential barrier. The DW propagation in the network structure is governed by the geometrically induced potential barrier and pinning strength against the propagation. This technique can be extended for controlling the trajectory of magnetic charge carriers in an artificial spin ice lattice.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Sethi, Pankaj
Murapaka, Chandrasekhar
Goolaup, Sarjoosing
Chen, Yun Jie
Leong, Siang Huei
Lew, Wen Siang
format Article
author Sethi, Pankaj
Murapaka, Chandrasekhar
Goolaup, Sarjoosing
Chen, Yun Jie
Leong, Siang Huei
Lew, Wen Siang
author_sort Sethi, Pankaj
title Direct observation of deterministic domain wall trajectory in magnetic network structures
title_short Direct observation of deterministic domain wall trajectory in magnetic network structures
title_full Direct observation of deterministic domain wall trajectory in magnetic network structures
title_fullStr Direct observation of deterministic domain wall trajectory in magnetic network structures
title_full_unstemmed Direct observation of deterministic domain wall trajectory in magnetic network structures
title_sort direct observation of deterministic domain wall trajectory in magnetic network structures
publishDate 2018
url https://hdl.handle.net/10356/80735
http://hdl.handle.net/10220/46592
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