4.6 Article

Strain-induced collapse of Landau levels in real Weyl semimetals

期刊

PHYSICAL REVIEW B
卷 106, 期 7, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.106.075125

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资金

  1. Centro de Fisica de Materiales, Universidad del Pais Vasco
  2. Institute for Basic Science [IBSR009-D1]
  3. Seoul National University
  4. KISTI Supercomputing Center [KSC-2020-INO-0078]
  5. MCIU/AEI/FEDER, UE [PGC2018-099199- B-I00]

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The collapse of Landau levels induced by strain in anisotropic, tilted Weyl semimetals is analyzed, and the conditions for experimentally accessible external strain in TaAs are determined through first-principles calculations.
The collapse of Landau levels under an electric field perpendicular to the magnetic field is one of the distinctive features of Dirac materials. So is the coupling of lattice deformations to the electronic degrees of freedom in the form of gauge fields, which allows the formation of pseudo-Landau levels from strain. We analyze the collapse of Landau levels induced by strain on realistic Weyl semimetals hosting anisotropic, tilted Weyl cones in momentum space. We perform first-principles calculations to establish the conditions on the external strain for the collapse of Landau levels in TaAs which can be experimentally accessed.

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