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Title: Spin orbit torque induced asymmetric depinning of chiral Néel domain wall in Co/Ni heterostructures
Authors: Ramu, Maddu
Goolaup, Sarjoosing
Gan, Wei Liang
Krishnia, Sachin
Lim, Gerard Joseph
Lew, Wen Siang
Keywords: Dielectrophoresis
Chiral symmetries
Issue Date: 2017
Source: Ramu, M., Goolaup, S., Gan, W. L., Krishnia, S., Lim, G. J., & Lew, W. S. (2017). Spin orbit torque induced asymmetric depinning of chiral Néel domain wall in Co/Ni heterostructures. Applied Physics Letters, 110(16), 162402-.
Series/Report no.: Applied Physics Letters
Abstract: In this letter, we report on distinct depinning of a chiral Néel domain wall (DW) driven by spin-orbit torque (SOT) in Co/Ni nanowires with symmetric potential barriers. In these structures, DW propagation was shown to be in the opposite direction to the electron flow as evidenced from current assisted DW depinning measurements. A transition from field dominated DW depinning to SOT dominated DW depinning was observed as the bias current was increased. For SOT dominated DW depinning, the Up-Down DW exhibits a larger depinning field as compared to the Down-Up DW. This is attributed to the interplay between the SOT and Dzyaloshinskii-Moriya interaction in the structure.
ISSN: 0003-6951
DOI: 10.1063/1.4980120
Schools: School of Physical and Mathematical Sciences 
Rights: © 2017 American Institute of Physics (AIP). This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). 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
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