One of the most remarkable properties of magic-angle twisted bilayer graphene is that the low-energy bands can have nonzero valley Chern numbers, which enable the realization of the first example of a material with purely orbital-based magnetism. In this work, evidence for orbital magnetic moment generated by the moir\'e-scale current loops circulating in the moir\'e pattern of a twisted bilayer graphene is reported. This paves the way to explore orbital magnetism in slightly twisted graphene systems.
No takes yet. Share an insight, caveat, or question.
Li et al. (2020) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: