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

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Karube K., White J. S., Morikawa D., Bartkowiak M., Kikkawa A., Tokunaga Y., Arima T., Rønnow H. M., Tokura Y., Taguchi Y.,
Project Discovery and Nanoengineering of Novel Skyrmion-hosting Materials
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Original article (peer-reviewed)

Journal Physical Review Materials
Volume (Issue) 1(7)
Page(s) 074405 - 074405
Title of proceedings Physical Review Materials
DOI 10.1103/physrevmaterials.1.074405

Open Access

URL https://arxiv.org/abs/1709.08047
Type of Open Access Repository (Green Open Access)

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.
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