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Title: Low field domain wall dynamics in artificial spin-ice basis structure
Authors: Lim, Gerard Joseph
Kwon, Jae Suk
Goolaup, Sarjoosing
Kerk, I. S.
Chang, Chip Hong
Roy, K.
Lew, Wen Siang
Issue Date: 2015
Source: Kwon, J., Goolaup, S., Lim, G. J., Kerk, I. S., Chang, C. H., Roy, K., et al. (2015). Low field domain wall dynamics in artificial spin-ice basis structure. Journal of Applied Physics, 118, 163907-.
Series/Report no.: Journal of Applied Physics
Abstract: Artificial magnetic spin-ice nanostructures provide an ideal platform for the observation of magnetic monopoles. The formation of a magnetic monopole is governed by the motion of a magnetic charge carrier via the propagation of domain walls (DWs) in a lattice. To date, most experiments have been on the static visualization of DW propagation in the lattice. In this paper, we report on the low field dynamics of DW in a unit spin-ice structure measured by magnetoresistance changes. Our results show that reversible DW propagation can be initiated within the spin-ice basis. The initial magnetization configuration of the unit structure strongly influences the direction of DW motion in the branches. Single or multiple domain wall nucleation can be induced in the respective branches of the unit spin ice by the direction of the applied field.
ISSN: 0021-8979
DOI: 10.1063/1.4934733
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Rights: © 2015 AIP Publishing LLC. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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