As compared to other prominent twisted-layered systems that feature flat bands, twisted helical trilayer graphene at magic angles displays flat bands with Chern number higher than one, and features a Chern mosaic. The authors show here intriguing topological phase transitions with increasing Chern numbers in the flat bands under a perpendicular magnetic field. The associated wavefunctions are derived, and a set of hidden wavefunctions are shown to play a crucial role in the topological transitions and increase of Chern numbers.
No takes yet. Share an insight, caveat, or question.
Datta et al. (2024) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: