Weak localization in disordered spin-1 chiral fermions

doi:10.1088/1674-1056/ac720b

中国物理B ›› 2023, Vol. 32 ›› Issue (1): 17502-017502.doi: 10.1088/1674-1056/ac720b

Weak localization in disordered spin-1 chiral fermions

Shaopeng Miao(苗少鹏)^1,2, Daifeng Tu(涂岱峰)^1,2,†, and Jianhui Zhou(周建辉)¹

1 Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230026, China

收稿日期:2022-04-01 修回日期:2022-05-09 接受日期:2022-05-23 出版日期:2022-12-08 发布日期:2022-12-20
通讯作者: Daifeng Tu E-mail:tudai@mail.ustc.edu.cn

Weak localization in disordered spin-1 chiral fermions

Shaopeng Miao(苗少鹏)^1,2, Daifeng Tu(涂岱峰)^1,2,†, and Jianhui Zhou(周建辉)¹

1 Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230026, China

Received:2022-04-01 Revised:2022-05-09 Accepted:2022-05-23 Online:2022-12-08 Published:2022-12-20
Contact: Daifeng Tu E-mail:tudai@mail.ustc.edu.cn

摘要/Abstract

摘要： We theoretically investigate the quantum interference theory of magnetotransport of the three-component or spin-1 chiral fermions, which possess two linear Dirac bands and a flat band. For isotropic scalar impurities, the correction of conductivity from the coherent backscatter and non-coherent backscatter contributions cancel out in the intravalley scattering, leading to a weak localization correction to the Drude conductivity from the intervalley scattering. For the anisotropic impurities, the above cancelation is removed, we find the approximative quantum interference conductivity in the weak anisotropy case. The contributions from the chiral anomaly and classical Lorentz force are also discussed. Our work reveals some intriguing and detectable transport signatures of the novel spin-1 chiral fermions.

关键词: magnetotransport, weak localization, chiral fermions

Abstract: We theoretically investigate the quantum interference theory of magnetotransport of the three-component or spin-1 chiral fermions, which possess two linear Dirac bands and a flat band. For isotropic scalar impurities, the correction of conductivity from the coherent backscatter and non-coherent backscatter contributions cancel out in the intravalley scattering, leading to a weak localization correction to the Drude conductivity from the intervalley scattering. For the anisotropic impurities, the above cancelation is removed, we find the approximative quantum interference conductivity in the weak anisotropy case. The contributions from the chiral anomaly and classical Lorentz force are also discussed. Our work reveals some intriguing and detectable transport signatures of the novel spin-1 chiral fermions.

Key words: magnetotransport, weak localization, chiral fermions

中图分类号: (Magnetotransport phenomena; materials for magnetotransport)

75.47.-m

03.65.Vf (Phases: geometric; dynamic or topological)

Shaopeng Miao(苗少鹏), Daifeng Tu(涂岱峰), and Jianhui Zhou(周建辉). Weak localization in disordered spin-1 chiral fermions[J]. 中国物理B, 2023, 32(1): 17502-017502.

Shaopeng Miao(苗少鹏), Daifeng Tu(涂岱峰), and Jianhui Zhou(周建辉). Weak localization in disordered spin-1 chiral fermions[J]. Chin. Phys. B, 2023, 32(1): 17502-017502.

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Weak localization in disordered spin-1 chiral fermions

Weak localization in disordered spin-1 chiral fermions

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