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Condensed Matter > Mesoscale and Nanoscale Physics

arXiv:1512.07965 (cond-mat)
[Submitted on 25 Dec 2015]

Title:Purely electrical detection of a skyrmion in constricted geometry

Authors:Keita Hamamoto, Motohiko Ezawa, Naoto Nagaosa
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Abstract:How to detect the skyrmion position is a crucial problem in future skyrmionics since it corresponds to the reading process of information. We propose a method to detect the skyrmion position purely electrically by measuring the Hall conductance in a constricted geometry. The Hall conductance becomes maximum when a skyrmion is at the lead position. It is possible to detect the skyrmion position even at room temperature. We find an optimized width of the sample determined by the skyrmion radius. We also investigate the effects of elastic and inelastic scatterings, and finite temperature. We find that the local density of states become minimum at the skyrmion position. Our results will be a basis of future skyrmion electronics.
Comments: 5 pages, 8 figures
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Cite as: arXiv:1512.07965 [cond-mat.mes-hall]
  (or arXiv:1512.07965v1 [cond-mat.mes-hall] for this version)
  https://doi.org/10.48550/arXiv.1512.07965
Journal reference: Appl. Phys. Lett.108, 112401 (2016)
Related DOI: https://doi.org/10.1063/1.4943949

Submission history

From: Keita Hamamoto [view email]
[v1] Fri, 25 Dec 2015 06:32:50 UTC (267 KB)
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