Fate of Weyl semimetals in the presence of incommensurate potentials
arXiv:1702.03265 · doi:10.1103/PhysRevA.95.053634
Abstract
We investigate the effect of the incommensurate potential on Weyl semimetal, which is proposed to be realized in ultracold atomic systems trapped in three-dimensional optical lattices. For the system without the Fermi arc, we find that the Weyl points are robust against the incommensurate potential and the system enters into a metallic phase only when the incommensurate potential strength exceeds a critical value. We unveil the trastition by analysing the properties of wave functions and the density of states as a function of the incommensurate potential strength. We also study the system with Fermi arcs and find the Fermi arcs are sensitive against the incommensurate potential and can be destoryed by a weak incommensurate potential.
6 pages, 5 figures
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Cited by in corpus (5)
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- Nodal-line semimetals from Weyl superlattices
- Quasicrystalline Weyl points and dense Fermi-Bragg arcs
- Universality classes of the Anderson transitions driven by quasiperiodic potential in the three-dimensional Wigner-Dyson symmetry classes
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