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Hu XF, Wu J, Niu DX, et al. Discontinuous properties of current-induced magnetic domain wall depinning. Sci Rep. 2013;3:3080doi: 10.1038/srep03080.
Hu, X. F., Wu, J., Niu, D. X., Chen, L., Morton, S. A., Scholl, A., Huang, Z. C., Zhai, Y., Zhang, W., Will, I., Xu, Y. B., Zhang, R., & van der Laan, G. (2013). Discontinuous properties of current-induced magnetic domain wall depinning. Scientific reports, 33080. https://doi.org/10.1038/srep03080
Hu, X F, et al. "Discontinuous properties of current-induced magnetic domain wall depinning." Scientific reports vol. 3 (2013): 3080. doi: https://doi.org/10.1038/srep03080
Hu XF, Wu J, Niu DX, Chen L, Morton SA, Scholl A, Huang ZC, Zhai Y, Zhang W, Will I, Xu YB, Zhang R, van der Laan G. Discontinuous properties of current-induced magnetic domain wall depinning. Sci Rep. 2013 Oct 30;3:3080. doi: 10.1038/srep03080. PMID: 24170087; PMCID: PMC3812652.
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Sci Rep. 2013 Oct 30;3:3080. doi: 10.1038/srep03080.

Discontinuous properties of current-induced magnetic domain wall depinning.

Scientific reports

X F Hu, J Wu, D X Niu, L Chen, S A Morton, A Scholl, Z C Huang, Y Zhai, W Zhang, I Will, Y B Xu, R Zhang, G van der Laan

Affiliations

  1. 1] Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD, UK [2] Nanjing-York International Center of Spintronics, School of Electronics Science and Engineering, Nanjing University, Nanjing 210093, China.

PMID: 24170087 PMCID: PMC3812652 DOI: 10.1038/srep03080

Abstract

The current-induced motion of magnetic domain walls (DWs) confined to nanostructures is of great interest for fundamental studies as well as for technological applications in spintronic devices. Here, we present magnetic images showing the depinning properties of pulse-current-driven domain walls in well-shaped Permalloy nanowires obtained using photoemission electron microscopy combined with x-ray magnetic circular dichroism. In the vicinity of the threshold current density (Jth = 4.2 × 10(11) A.m(-2)) for the DW motion, discontinuous DW depinning and motion have been observed as a sequence of "Barkhausen jumps". A one-dimensional analytical model with a piecewise parabolic pinning potential has been introduced to reproduce the DW hopping between two nearest neighbour sites, which reveals the dynamical nature of the current-driven DW motion in the depinning regime.

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