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

doi:10.1103/PhysRevB.101.125121

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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Abstract

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 language	English (US)
Article number	125121
Journal	Physical Review B
Volume	101
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.101.125121
State	Published - Mar 15 2020

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.101.125121

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title = "Enhanced anomalous Hall effect in the magnetic topological semimetal Co3Sn2-xInx S2",

abstract = "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.",

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

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doi = "10.1103/PhysRevB.101.125121",

language = "English (US)",

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T1 - Enhanced anomalous Hall effect in the magnetic topological semimetal Co3Sn2-xInx S2

AU - Zhou, Huibin

AU - Chang, Guoqing

AU - Wang, Guangqiang

AU - Gui, Xin

AU - Xu, Xitong

AU - Yin, Jia Xin

AU - Guguchia, Zurab

AU - Zhang, Songtian S.

AU - Chang, Tay Rong

AU - Lin, Hsin

AU - Xie, Weiwei

AU - Hasan, M. Zahid

AU - Jia, Shuang

PY - 2020/3/15

Y1 - 2020/3/15

N2 - 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.

AB - 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.

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

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