Topological Weyl Semi-metal from a Lattice Model

Abstract

We define and study a three dimensional lattice model which displays a Weyl semi-metallic phase. This model consists of coupled layers of quantum (anomalous) Hall insulators. The Weyl semi-metallic phase appears between a resulting quantum Hall insulating phase and a normal insulating phase. Weyl fermions in this Weyl semi-metal, similar to Dirac fermions in graphene, have their lattice pseudo-spin locked to their momenta. We investigate surface states and Fermi arcs, and their evolution for different phases, by exactly diagonalizing the lattice model as well as by analyzing their topological origins.

Accepted version for publication in EPL. 6 pages, 4 figures

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Cited by in corpus (16)

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• Superconductivity of doped Weyl semimetals: finite-momentum pairing and electronic analogues of the 3He-A phase
• Friedel oscillations due to Fermi arcs in Weyl semimetals
• Weak antilocalization and localization in disordered and interacting Weyl semimetals
• Constructing a Weyl semimetal by stacking one dimensional topological phases
• Andreev Reflection in Weyl Semimetals
• Electron Correlation Induced Spontaneous Symmetry Breaking and Weyl Semimetal Phase in a Strongly Spin-Orbit Coupled System
• Moving and merging of Dirac points on a square lattice and hidden symmetry protection
• Weyl semimetallic phase in an interacting lattice system
• Fractionalized Metals and Superconductors in Three Dimensions
• Triplet superconductivity in 3D Dirac semimetal due to exchange interaction
• Chiral universality class of the normal-superconducting and the exciton condensation transition on the surface of topological insulator