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Article: Disordered Weyl Semimetals and Their Topological Family

TitleDisordered Weyl Semimetals and Their Topological Family
Authors
Issue Date2015
Citation
Physics Review Letters, 2015, v. 114 n. 20, article no. 206602 How to Cite?
AbstractWe develop a topological theory for disordered Weyl semimetals in the framework of the gauge invariance of the replica formalism and boundary-bulk correspondence of Chern insulators. An anisotropic topological θ term is analytically derived for the effective nonlinear σ model. It is this nontrivial topological term that ensures that the bulk transverse transport of Weyl semimetals is robust against disorders. Moreover, we establish a general diagram that reveals the intrinsic relations among topological terms in the nonlinear σ models and gauge response theories, respectively, for (2n+2)-dimensional topological insulators, (2n+1)-dimensional chiral fermions, (2n+1)-dimensional chiral semimetals, and (2n)-dimensional topological insulators with n being a positive integer.
Persistent Identifierhttp://hdl.handle.net/10722/211909

 

DC FieldValueLanguage
dc.contributor.authorZhao, Y-
dc.contributor.authorWang, Z-
dc.date.accessioned2015-07-21T02:15:39Z-
dc.date.available2015-07-21T02:15:39Z-
dc.date.issued2015-
dc.identifier.citationPhysics Review Letters, 2015, v. 114 n. 20, article no. 206602-
dc.identifier.urihttp://hdl.handle.net/10722/211909-
dc.description.abstractWe develop a topological theory for disordered Weyl semimetals in the framework of the gauge invariance of the replica formalism and boundary-bulk correspondence of Chern insulators. An anisotropic topological θ term is analytically derived for the effective nonlinear σ model. It is this nontrivial topological term that ensures that the bulk transverse transport of Weyl semimetals is robust against disorders. Moreover, we establish a general diagram that reveals the intrinsic relations among topological terms in the nonlinear σ models and gauge response theories, respectively, for (2n+2)-dimensional topological insulators, (2n+1)-dimensional chiral fermions, (2n+1)-dimensional chiral semimetals, and (2n)-dimensional topological insulators with n being a positive integer.-
dc.languageeng-
dc.relation.ispartofPhysics Review Letters-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleDisordered Weyl Semimetals and Their Topological Family-
dc.typeArticle-
dc.identifier.emailZhao, Y: yuxinphy@hku.hk-
dc.identifier.emailWang, Z: zwang@hku.hk-
dc.identifier.authorityWang, Z=rp00802-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.114.206602-
dc.identifier.hkuros244838-

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