Weak localization in disordered spin-1 chiral fermions  

作　　者：苗少鹏 涂岱峰 周建辉 Shaopeng Miao;Daifeng Tu;Jianhui Zhou(Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[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

出　　处：《Chinese Physics B》2023年第1期493-502,共10页中国物理B（英文版）

基　　金：partially supported by the High Magnetic Field Laboratory of Anhui Province,China。

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 

分 类 号：O469[理学—凝聚态物理]