Weak antilocalization and interaction-induced localization of Dirac and Weyl Fermions in topological insulators and semimetals  

作　　者：卢海舟 沈顺清 

机构地区：[1]Department of Physics, South University of Science and Technology of China [2]Department of Physics, The University of Hong Kong

出　　处：《Chinese Physics B》2016年第11期26-33,共8页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program,China(Grant No.2016YFA0301700);the Research Grant Council,University Grants Committee,Hong Kong,China(Grant No.17303714);the National Natural Science Foundation of China(Grant No.11574127);the National Thousand-Young-Talents Program of China

摘　　要：Weak localization and antilocalization are quantum transport phenomena that arise from the quantum interference in disordered metals.At low temperatures,they can give distinct temperature and magnetic field dependences in conductivity,allowing the symmetry of the system to be explored.In the past few years,they have also been observed in newly emergent topological materials,including topological insulators and topological semimetals.In contrast from the conventional electrons,in these new materials the quasiparticles are described as Dirac or Weyl fermions.In this article,we review our recent efforts on the theories of weak antilocalization and interaction-induced localization for Dirac and Weyl fermions in topological insulators and topological semimetals.Weak localization and antilocalization are quantum transport phenomena that arise from the quantum interference in disordered metals.At low temperatures,they can give distinct temperature and magnetic field dependences in conductivity,allowing the symmetry of the system to be explored.In the past few years,they have also been observed in newly emergent topological materials,including topological insulators and topological semimetals.In contrast from the conventional electrons,in these new materials the quasiparticles are described as Dirac or Weyl fermions.In this article,we review our recent efforts on the theories of weak antilocalization and interaction-induced localization for Dirac and Weyl fermions in topological insulators and topological semimetals.

关 键 词：topological Dirac localization symmetry arise Berry correction momentum emergent disordered 

分 类 号：O469[理学—凝聚态物理]