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  • Letter

Probe of skyrmion phases and dynamics in MnSi via the magnetoelectric effect in a composite configuration

Yisheng Chai1,2,*, Peipei Lu3,4,†, Haifeng Du5, Jianxin Shen4, Yinina Ma4, Kun Zhai4, Le Wang4, Youguo Shi4, Hang Li4 et al.

Wenhong Wang4 and Young Sun1,2,4,‡

  • 1Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China
  • 2Low Temperature Physics Laboratory and Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 401331, China
  • 3College of Physics, Hebei Normal University, Shijiazhuang 050024, Hebei, China
  • 4Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 5High Magnetic Field Laboratory, Chinese Academy of Science, Hefei 230031, Anhui, China

  • *yschai@cqu.edu.cn
  • †peiplu@hebtu.edu.cn
  • ‡youngsun@cqu.edu.cn
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Phys. Rev. B 104, L100413 – Published 17 September, 2021

DOI: https://doi.org/10.1103/PhysRevB.104.L100413

Abstract

We have developed a sensitive technique to probe the magnetic skyrmion phases and dynamics by employing the interfacial coupling effect in a magnetoelectric composite configuration. The study on a MnSi single crystal sample using this technique provides clear evidence for the skyrmion lattice phase and coexistence of skyrmion and conical phase. Above the Curie temperature TC, a region with strong spin fluctuation is revealed as well. By tuning the density of skyrmion or disorder, a transition from the skyrmion lattice to skyrmion-conical coexisting phase is observed. The observation is in good agreement with a theoretical model which predicts the dissipation behavior in the coexistence phase.

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Phys. Rev. B 104, L100413– Published 17 September, 2021
  • Received 20 January 2021
  • Revised 26 August 2021
  • Accepted 2 September 2021
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