Global Phase Diagram of Disordered Type-II Weyl Semimetals

Abstract

With electron and hole pockets touching at the Weyl node, type-II Weyl semimetal is a newly proposed topological state distinct from its type-I cousin. We numerically study the localization effect for tilted type-I as well as type-II Weyl semimetals and give the global phase diagram. For dis- ordered type-I Weyl semimetal, an intermediate three-dimensional quantum anomalous Hall phase is confirmed between Weyl semimetal phase and diffusive metal phase. However, this intermediate phase is absent for disordered type-II Weyl semimetal. Besides, near the Weyl nodes, comparing to its type-I cousin, type-II Weyl semimetal possesses even larger ratio between the transport lifetime along the direction of tilt and the quantum lifetime. Near the phase boundary between the type-I and the type-II Weyl semimetals, infinitesimal disorder will induce an insulating phase so that in this region, the concept of Weyl semimetal is meaningless for real materials.

7 pages, 5 figures

References in corpus (8)

• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Topological Anderson Insulator
• Topological Anderson Insulator in Three Dimensions
• Electron scattering in tantalum monoarsenide
• Hybrid Weyl Semimetal
• Tilted disordered Weyl semimetals
• Disorder Induced Phase Transitions of Type-II Weyl Semimetal
• A Generic Phase between Disordered Weyl Semimetal and Diffusive Metal

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• Interplay between tilt, disorder, and Coulomb interaction in type-I Dirac fermions
• Disorder-induced phase transitions in double Weyl semimetals
• Effect of incommensurate potential on nodal-link semimetals
• Recent progress on disorder-induced topological phases