Optical properties of the Hofstadter butterfly in the moiré superlattice
作者： Pilkyung Moon , Mikito Koshino
DOI: 10.1103/PHYSREVB.88.241412
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摘要: We investigate the optical absorption spectrum and selection rule for Hofstadter butterfly in twisted bilayer graphene under magnetic fields. demonstrate that exhibits a self-similar recursive pattern reflecting fractal nature of energy spectrum. find has nested structure as well, it is governed by conservation total angular momentum summed over different hierarchies.
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