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

作者机构：Anhui Key Laboratory of Condensed Matter Physics at Extreme ConditionsHigh Magnetic Field LaboratoryHFIPSChinese Academy of SciencesHefei 230031China University of Science and Technology of ChinaHefei 230026China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2023年第32卷第1期

页      面：493-502页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

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

主　　题：magnetotransport weak localization chiral fermions 

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.