View Item 
      •   Home
      • 1. Schools
      • College of Science
      • School of Physical and Mathematical Sciences (SPMS)
      • SPMS Journal Articles
      • View Item
      •   Home
      • 1. Schools
      • College of Science
      • School of Physical and Mathematical Sciences (SPMS)
      • SPMS Journal Articles
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      Subject Lookup

      Browse

      All of DR-NTUCommunities & CollectionsTitlesAuthorsBy DateSubjectsThis CollectionTitlesAuthorsBy DateSubjects

      My Account

      Login

      Statistics

      Most Popular ItemsStatistics by Country/RegionMost Popular Authors

      About DR-NTU

      Bilayer skyrmion dynamics on a magnetic anisotropy gradient

      Thumbnail
      Bilayer skyrmion dynamics on a magnetic anisotropy gradient.pdf (1.114Mb)
      Author
      Ang, Calvin Ching Ian
      Gan, Weiliang
      Lew, Wen Siang
      Date of Issue
      2019
      School
      School of Physical and Mathematical Sciences
      Version
      Published version
      Abstract
      Magnetic skyrmion transport has been primarily based on the use of spin torques which require high current densities and face performance deterioration associated with Joule heating. In this work, we derive an analytical model for energy efficient skyrmion propagation in an antiferromagnetically-coupled bilayer structure using a magnetic anisotropy gradient. The interlayer skyrmion coupling provides a strong restoring force between the skyrmions, which not only prevents annihilation but also increases their forward velocity up to the order of km s–1. For materials with low Gilbert damping parameter, the interlayer skyrmion coupling force can be amplified up to ten times, with a corresponding increase in velocity. Furthermore, the analytical model also provides insights into the dynamics of skyrmion pinning and relaxation of asymmetric skyrmion pairs in bilayer-coupled skyrmion systems.
      Subject
      Bilayer Skyrmions
      Skyrmion Transport
      Science::Physics
      Type
      Journal Article
      Series/Journal Title
      New Journal of Physics
      Rights
      © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
      Collections
      • SPMS Journal Articles
      http://dx.doi.org/10.1088/1367-2630/ab1171
      Get published version (via Digital Object Identifier)

      Show full item record


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       

      DCSIMG