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      Effect of Disorder in a Three-Dimensional Layered Chern Insulator

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          Abstract

          We studied effects of disorder in a three dimensional layered Chern insulator. By calculating the localization length and density of states numerically, we found two distict types of metallic phases between Anderson insulator and Chern insulator; one is diffusive metallic (DM) phase and the other is renormalized Weyl semimetal (WSM) phase. We show that longitudinal conductivity at the zero energy state remains finite in the renormalizd WSM phase as well as in the DM phase, while goes to zero at a semimetal-metal quantum phase transition point between these two. Based on the Einstein relation combined with the self-consistent Born analysis, we give a conductivity scaling near the quantum transition point.

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          Author and article information

          Journal
          2015-07-09
          2016-02-11
          Article
          10.1103/PhysRevLett.116.066401
          1507.02381
          469e4cc1-2a32-4f6b-986e-4f3bd4a2aa91

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          Phys. Rev. Lett. 116, 066401 (2016)
          5 pages with supplemental material
          cond-mat.dis-nn cond-mat.mes-hall

          Theoretical physics,Nanophysics
          Theoretical physics, Nanophysics

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