Enhanced anomalous Hall effect in the magnetic topological semimetal Co3Sn2-xInx S2

Huibin Zhou, Guoqing Chang, Guangqiang Wang, Xin Gui, Xitong Xu, Jia Xin Yin, Zurab Guguchia, Songtian S. Zhang, Tay Rong Chang, Hsin Lin, Weiwei Xie, M. Zahid Hasan, Shuang Jia

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32 Scopus citations


We study the anomalous Hall effect (AHE) of single-crystalline Co3Sn2-xInxS2 over a large range of indium concentration x from 0 to 1. Their magnetization reduces progressively with increasing x while their ground state evolves from a ferromagnetic Weyl semimetal into a nonmagnetic insulator. Remarkably, after systematically scaling the AHE, we find that their intrinsic anomalous Hall conductivity (AHC) features an unexpected maximum at around x=0.15. The change of the intrinsic AHC corresponds with the doping evolution of Berry curvature and the maximum arises from the magnetic topological nodal-ring gap. Our experimental results show a larger AHC in a fundamental nodal-ring gap than that of Weyl nodes.

Original languageEnglish (US)
Article number125121
JournalPhysical Review B
Issue number12
StatePublished - Mar 15 2020

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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