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journal article·2022-09-01Open access

Intrinsically enhanced anomalous Hall conductivity and Hall angle in Sb-doped magnetic Weyl semimetal Co3Sn2S2

Jianlei Shen, Shen Zhang, Tingting Liang, Jing Wang, Qingqi Zeng, Yibo Wang, Hongxiang Wei, Enke Liu, Xiaohong Xu

APL Materials· Volume 10· Issue 9
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Source abstract

Abstract

The emerging magnetic topological materials bring a new opportunity to obtain giant transverse transport effects. In this work, a greatly enhanced anomalous Hall effect (AHE) is obtained in electron-doped magnetic Weyl semimetal Co3Sn2−xSbxS2, showing a maximum anomalous Hall conductivity (AHC) of ∼1600 Ω−1 cm−1 and an anomalous Hall angle of ∼26%. Based on the qualitative and quantitative analysis of scaling models, the enhanced AHC comes from the intrinsic mechanism related to the Berry curvature of the topological band structures. A small amount of electron doping still makes the EF around the gapped nodal rings. At the same time, disorder doping leads to the splitting and broadening of bands, which enhance the Berry curvature and intrinsic AHC. Our work provides an important guidance for the design and development of large AHE in magnetic topological materials.
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Research context

OpenAlex topics: Topological Materials and Phenomena · Graphene research and applications · Advanced Condensed Matter Physics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Research Institute of Materials Science, Shanxi Normal University 1 , Taiyuan 030000, China

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences 2 , Beijing 100190, China

School of Physical Sciences, University of Chinese Academy of Sciences 3 , Beijing 100049, China

Songshan Lake Materials Laboratory 4 , Dongguan, Guangdong 523808, China

Funding

Fundamental Science Center of The National Natural Science Foundation of China · Beijing Natural Science Foundation · National Natural Science Foundation of China · National Key R&D Program of China · The Strategic Priority Research Program · The Key Research Program of CAS · Basic Research Plan of Shanxi Province

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