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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 Exploration of emerging magnetoelectric coupling effects in new 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

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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