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  • PhysRevB.90.155418

    Rights statement: ©2014 American Physical Society

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

Research output: Contribution to journalJournal articlepeer-review

Published
Article number155418
<mark>Journal publication date</mark>15/10/2014
<mark>Journal</mark>Physical review B
Issue number15
Volume90
Number of pages5
Publication StatusPublished
Early online date10/10/14
<mark>Original language</mark>English

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 zeroth pLL displays a twofold increased degeneracy, while the characteristic sublattice polarization of the zeroth 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.

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©2014 American Physical Society