Observation of skyrmion-like magnetism in magnetic Weyl semimetal Co3Sn2S2

H. C. Wu, P. J. Sun, D. J. Hsieh, H. J. Chen, D. Chandrasekhar Kakarla, L. Z. Deng, C. W. Chu, H. D. Yang

研究成果: Article同行評審

16 引文 斯高帕斯(Scopus)

摘要

Polycrystalline samples Co3Sn2S2+x (0 ≤ x ≤ 0.34), (Co1-yNiy)3Sn2S2.26 (0 ≤ y ≤ 0.05), and (Co1-zFez)3Sn2S2.26 (0 ≤ z ≤ 0.05) were synthesized using a solid-state-reaction method and characterized by X-ray diffraction, electron probe microanalyzer, and magnetic measurements. Single crystal Co3Sn2S2 was also grown by self-flux method and analyzed by detailed magnetic measurements to study its isotropic nature. In this study, we reproduced the low magnetic field anomalous magnetism, as previously reported, with a negligible sample-dependent effect. Furthermore, based on ac magnetic susceptibility data, we established a H-T phase diagram including the skyrmion-like A phase of Co3Sn2S2. Both application of external high-pressure and chemical substitutions revealed anomalous magnetisms in low magnetic fields. The possible origin of the field-induced A phase can be the non-collinear skyrmion-like phenomenon. These interesting findings in Weyl semimetal Co3Sn2S2 provide a new candidate in spin-frustrated systems to explore the complexity of magnetic field–induced magnetism.

原文English
文章編號100189
期刊Materials Today Physics
12
DOIs
出版狀態Published - 2020 3月

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 能源(雜項)
  • 物理與天文學(雜項)

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