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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Degeneracy doubling and sublattice polarization in strain-induced pseudo-Landau levels
AU - Poli, Charles
AU - Arkinstall, Jake
AU - Schomerus, Henning
N1 - ©2014 American Physical Society
PY - 2014/10/15
Y1 - 2014/10/15
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevB.90.155418
DO - 10.1103/PhysRevB.90.155418
M3 - Journal article
VL - 90
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 15
M1 - 155418
ER -