Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet

Zhipeng Hou, Qiang Zhang, Xichao Zhang, Guizhou Xu, Jing Xia, Bei Ding, Hang Li, Senfu Zhang, Nitin M. Batra, Pedro M.F.J. Costa, Enke Liu, Guangheng Wu, Motohiko Ezawa, Xiaoxi Liu, Yan Zhou, Xixiang Zhang, Wenhong Wang

Research output: Contribution to journalArticle

Abstract

Helicity indicates the in-plane magnetic-moment swirling direction of a skyrmionic configuration. The ability to reverse the helicity of a skyrmionic bubble via purely electrical means has been predicted in frustrated magnetic systems; however, it has been challenging to observe this experimentally. The current-driven helicity reversal of the skyrmionic bubble in a nanostructured frustrated Fe3Sn2 magnet is experimentally demonstrated. The critical current density required to trigger the helicity reversal is 109–1010 A m−2, with a corresponding pulse-width varying from 1 µs to 100 ns. Computational simulations reveal that both the pinning effect and dipole–dipole interaction play a crucial role in the helicity reversal process.

Original languageEnglish (US)
Article number1904815
JournalAdvanced Materials
Volume32
Issue number1
DOIs
Publication statusPublished - Jan 1 2020

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Keywords

  • current-induced helicity reversal
  • frustrated magnets
  • skyrmions
  • spin-polarized current

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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