Archive for May, 2021
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Square-root topological semimetals
We propose topological semimetals generated by the square-root operation for tight-binding models in two and t […]
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Bulk-edge correspondence with generalized chiral symmetry
Dirac cones are generically tilted when realized in a realistic material. This gapless structure is effectivel […]
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Revisiting flat bands and localization
Flat bands cannot be accidental. Physically, it implies that the itinerancy of the system is not sufficient. F […]
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Kekule ordering and zero modes with disorder
Zero modes of chiral symmetric systems are stable as for symmetry preserving disorder. On a honeycomb lattice […]