Skyrmion formation in a bulk chiral magnet at zero magnetic field and above room temperature

K. Karube, J. S. White, D. Morikawa, M. Bartkowiak, A. Kikkawa, Y. Tokunaga, T. Arima, H. M. Rønnow, Y. Tokura, Y. Taguchi

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

We report that in a β-Mn-type chiral magnet Co9Zn9Mn2, skyrmions are realized as a metastable state over a wide temperature range, including room temperature, via field cooling through the thermodynamic equilibrium skyrmion phase that exists below a transition temperature Tc∼400 K. The once-created metastable skyrmions survive at zero magnetic field both at and above room temperature. Such robust skyrmions in a wide temperature and magnetic field region demonstrate the key role of topology and provide a significant step toward technological applications of skyrmions in bulk chiral magnets.

Original languageEnglish
Article number074405
JournalPhysical Review Materials
Volume1
Issue number7
DOIs
Publication statusPublished - 2017 Dec 15
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

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