中国物理B ›› 2020, Vol. 29 ›› Issue (1): 17101-017101.doi: 10.1088/1674-1056/ab5fbc

所属专题: Virtual Special Topic — Magnetism and Magnetic Materials

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Giant topological Hall effect of ferromagnetic kagome metal Fe3Sn2

Qi Wang(王琦), Qiangwei Yin(殷蔷薇), Hechang Lei(雷和畅)   

  1. Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices, Renmin University of China, Beijing 100872, China
  • 收稿日期:2019-10-22 修回日期:2019-11-23 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: Hechang Lei E-mail:hlei@ruc.edu.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant No. 2016YFA0300504), the National Natural Science Foundation of China (Grant Nos. 11574394, 11774423, and 11822412), the Fundamental Research Funds for the Central Universities of China, and the Research Funds of Renmin University of China (RUC) (Grant Nos. 15XNLQ07, 18XNLG14, and 19XNLG17).

Giant topological Hall effect of ferromagnetic kagome metal Fe3Sn2

Qi Wang(王琦), Qiangwei Yin(殷蔷薇), Hechang Lei(雷和畅)   

  1. Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices, Renmin University of China, Beijing 100872, China
  • Received:2019-10-22 Revised:2019-11-23 Online:2020-01-05 Published:2020-01-05
  • Contact: Hechang Lei E-mail:hlei@ruc.edu.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant No. 2016YFA0300504), the National Natural Science Foundation of China (Grant Nos. 11574394, 11774423, and 11822412), the Fundamental Research Funds for the Central Universities of China, and the Research Funds of Renmin University of China (RUC) (Grant Nos. 15XNLQ07, 18XNLG14, and 19XNLG17).

摘要: We present the experiment observation of a giant topological Hall effect (THE) in a frustrated kagome bilayer magnet Fe3Sn2. The negative topologically Hall resistivity appears when the field is below 1.3 T and it increases with increasing temperature up to 300 K. Its maximum absolute value reaches ~2.01 μΩ·cm at 300 K and 0.76 T. The origins of the observed giant THE can be attributed to the coexistence of the field-induced skyrmion state and the non-collinear spin configuration, possibly related to the magnetic frustration interaction in Fe3Sn2.

关键词: topological Hall effect, skyrmion state, non-collinear spin configuration

Abstract: We present the experiment observation of a giant topological Hall effect (THE) in a frustrated kagome bilayer magnet Fe3Sn2. The negative topologically Hall resistivity appears when the field is below 1.3 T and it increases with increasing temperature up to 300 K. Its maximum absolute value reaches ~2.01 μΩ·cm at 300 K and 0.76 T. The origins of the observed giant THE can be attributed to the coexistence of the field-induced skyrmion state and the non-collinear spin configuration, possibly related to the magnetic frustration interaction in Fe3Sn2.

Key words: topological Hall effect, skyrmion state, non-collinear spin configuration

中图分类号:  (Strongly correlated electron systems; heavy fermions)

  • 71.27.+a
71.55.Ak (Metals, semimetals, and alloys) 75.50.-y (Studies of specific magnetic materials)