Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs
Weyl semimetal is the three-dimensional analog of graphene. According to quantum field theory, the appearance of Weyl points near the Fermi level will cause novel transport phenomena related to chiral anomaly. In the present paper, we report the experimental evidence for the long-anticipated negativ...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2015-08-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.5.031023 |
| _version_ | 1818900746366615552 |
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| author | Xiaochun Huang Lingxiao Zhao Yujia Long Peipei Wang Dong Chen Zhanhai Yang Hui Liang Mianqi Xue Hongming Weng Zhong Fang Xi Dai Genfu Chen |
| author_facet | Xiaochun Huang Lingxiao Zhao Yujia Long Peipei Wang Dong Chen Zhanhai Yang Hui Liang Mianqi Xue Hongming Weng Zhong Fang Xi Dai Genfu Chen |
| author_sort | Xiaochun Huang |
| collection | DOAJ |
| description | Weyl semimetal is the three-dimensional analog of graphene. According to quantum field theory, the appearance of Weyl points near the Fermi level will cause novel transport phenomena related to chiral anomaly. In the present paper, we report the experimental evidence for the long-anticipated negative magnetoresistance generated by the chiral anomaly in a newly predicted time-reversal-invariant Weyl semimetal material TaAs. Clear Shubnikov de Haas (SdH) oscillations have been detected starting from a very weak magnetic field. Analysis of the SdH peaks gives the Berry phase accumulated along the cyclotron orbits as π, indicating the existence of Weyl points. |
| first_indexed | 2024-12-19T20:08:45Z |
| format | Article |
| id | doaj.art-c7fdf2f4e05248adb8a45db0e44e2c9c |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-19T20:08:45Z |
| publishDate | 2015-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-c7fdf2f4e05248adb8a45db0e44e2c9c2022-12-21T20:07:23ZengAmerican Physical SocietyPhysical Review X2160-33082015-08-015303102310.1103/PhysRevX.5.031023Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAsXiaochun HuangLingxiao ZhaoYujia LongPeipei WangDong ChenZhanhai YangHui LiangMianqi XueHongming WengZhong FangXi DaiGenfu ChenWeyl semimetal is the three-dimensional analog of graphene. According to quantum field theory, the appearance of Weyl points near the Fermi level will cause novel transport phenomena related to chiral anomaly. In the present paper, we report the experimental evidence for the long-anticipated negative magnetoresistance generated by the chiral anomaly in a newly predicted time-reversal-invariant Weyl semimetal material TaAs. Clear Shubnikov de Haas (SdH) oscillations have been detected starting from a very weak magnetic field. Analysis of the SdH peaks gives the Berry phase accumulated along the cyclotron orbits as π, indicating the existence of Weyl points.http://doi.org/10.1103/PhysRevX.5.031023 |
| spellingShingle | Xiaochun Huang Lingxiao Zhao Yujia Long Peipei Wang Dong Chen Zhanhai Yang Hui Liang Mianqi Xue Hongming Weng Zhong Fang Xi Dai Genfu Chen Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs Physical Review X |
| title | Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs |
| title_full | Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs |
| title_fullStr | Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs |
| title_full_unstemmed | Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs |
| title_short | Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs |
| title_sort | observation of the chiral anomaly induced negative magnetoresistance in 3d weyl semimetal taas |
| url | http://doi.org/10.1103/PhysRevX.5.031023 |
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