Revisiting Flat bands and localization
نویسندگان
چکیده
Flat bands imply lack of itinerancy due to some constraints that, in principle, results anomalous behaviors with randomness. By a molecular orbital (MO) representation the flat band systems, random MO models are introduced where degeneracy is preserved even The zero modes chiral symmetric system sublattice imbalance belong class. After explaining generic construction by MOs, several examples discussed numerical demonstration as sawtooth lattice one dimension and hyper-Pyrochlore any d-dimensions that extends Kagome (d=2) Pyrochlore (d=3) lattices general dimensions.
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 2021
ISSN: ['1096-035X', '0003-4916']
DOI: https://doi.org/10.1016/j.aop.2021.168453