Realization of correlated and topological electronic states in crystalline graphene | Video detail

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Realization of correlated and topological electronic states in crystalline graphene

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Supplementary Information

Electron-electron interactions can be significant in graphene with an ABC-stacking sequence. By developing innovative experimental techniques, we successfully fabricated high-quality ABC-stacked multilayer graphene and observed a correlated insulating state at charge neutrality, beginning with ABCA-tetralayer. Furthermore, by introducing proximity-induced spin-orbit coupling, at the charge neutrality point of ABCA-tetralayer, we achieved a topological Chern insulator with a layer-number-dependent Chern number of four.

Keywords:

layer stacking

multilayer graphene

strong correlation

Chern insulator

DOI: https://doi.org/10.61109/cs.202508.150

Submitted

17 July, 2025

Accepted

18 August, 2025

Published

29 August, 2025

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G. Chen, Realization of correlated and topological electronic states in crystalline graphene, Coshare Science 03, 03 (2025).

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