Degeneracy doubling and sublattice polarization in strain-induced pseudo-Landau levels

Abstract

The degeneracy and spatial support of pseudo-Landau levels (pLLs) in strained honeycomb lattices systematically depends on the geometry -- for instance, in hexagonal and rectangular flakes the 0th pLL displays a twofold increased degeneracy, while the characteristic sublattice polarization of the 0th pLL is only fully realized in a zigzag-terminated triangle. These features are dictated by algebraic constraints in the atomistic theory, and signify a departure from the standard picture in which all qualitative differences between pLLs and Landau levels induced by a magnetic field trace back to the valley-antisymmetry of the pseudomagnetic field.

5 pages, 2 figures

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Cited by in corpus (8)

• Realization of all-band-flat photonic lattices
• Strain-induced Landau Levels in arbitrary dimensions with an exact spectrum
• Strain-induced pseudo-magnetic field in $\alpha -{\mathcal{T}}_3$ lattice
• Strain-induced modifications of transport in gated graphene nanoribbons
• Quantum Monte Carlo study of honeycomb antiferromagnets under a triaxial strain
• Pseudo-magnetic fields in square lattices
• Strain-induced Landau levels of Majorana fermions in an anisotropically interacting Kitaev model on a honeycomb lattice
• Flux-induced midgap states between strain-engineered flat bands