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Topological matter

Topological matter

Physicists close in on fractionally-charged electron mystery in graphene

02 Dec 2024 Isabelle Dumé
Diagram showing an interaction-induced topological
Band structure: Noninteracting band structure for pentalayer graphene at a displacement field energy of -40 meV. There is a wide gap between valence and conduction bands, and a zoomed-in view at right illustrates the "flatness" of the active conduction band (red line). This band carries a Chern number of 1. (Courtesy: Zhihuan Dong)
Physicists in the US have found an explanation for why electrons in a material called pentalayer moi

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