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 dependence...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.展开更多
Dear Editor：Numerous magnetic resonance imaging（MRI）studies have demonstrated that patients with early-onset schizophrenia（EOS）have widespread structural abnormalities in the cortical gray matter[1],suggesting th...Dear Editor：Numerous magnetic resonance imaging（MRI）studies have demonstrated that patients with early-onset schizophrenia（EOS）have widespread structural abnormalities in the cortical gray matter[1],suggesting that neurobiological processes play a central role in the structural abnormalities underlying the pathophysiology of schizophrenia[2].In addition,volumetric abnormalities have been used to identify individuals at risk of mental states of展开更多
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)+1 种基金the National Natural Science Foundation of China(Grant No.11574127)the National Thousand-Young-Talents Program of China
文摘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.
基金supported by the National Natural Science Foundation of China (30900486, 81371480, 81271484, 81471361, 81100996, and 81200838)the National Basic Research Development Program (973) of China (2012CB517904)supported by the Sheng-Hua Yuying Project of Central South University, China
文摘Dear Editor：Numerous magnetic resonance imaging（MRI）studies have demonstrated that patients with early-onset schizophrenia（EOS）have widespread structural abnormalities in the cortical gray matter[1],suggesting that neurobiological processes play a central role in the structural abnormalities underlying the pathophysiology of schizophrenia[2].In addition,volumetric abnormalities have been used to identify individuals at risk of mental states of
