Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/85725
Title: Observation of ice-rule violation and monopole dynamics via edge nucleation of domain walls in artificial spin ice lattice
Authors: Krishnia, Sachin
Purnama, Indra
Lew, Wen Siang
Keywords: Domain Walls
Spin Ice
Issue Date: 2016
Source: Krishnia, S., Purnama, I., & Lew, W. S. (2016). Observation of ice-rule violation and monopole dynamics via edge nucleation of domain walls in artificial spin ice lattice. Journal of Magnetism and Magnetic Materials, 420,158-165.
Series/Report no.: Journal of Magnetism and Magnetic Materials
Abstract: In a patterned Co honeycomb spin ice structure, we show that violation in the ice-rule or magnetic monopoles, can be observed during a magnetization reversal process in 430 Oe≤H≤760 Oe magnetic field (H) range. The monopoles are shown to originate from the nucleation of domain walls at the edges, and they hop towards the other edge via the propagation of magnetic domain walls. The paths that the domain walls traveled or the Dirac strings, are shown to increase in length with magnetic fields increment and no random flipping of the bars are observed in the structure.
URI: https://hdl.handle.net/10356/85725
http://hdl.handle.net/10220/43811
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2016.07.005
Rights: © 2016 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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