Have mysterious topological valley currents been observed in graphene superlattices?

We provide a critical discussion concerning the claim of topological valley currents, driven by a global Berry curvature and valley Hall effect proposed in recent literature. After pointing out a major inconsistency of the theoretical scenario proposed to interpret giant nonlocal resistance, we disc...

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Bibliographic Details
Published in:JPhys materials 2022-04, Vol.5 (2), p.21001
Main Authors: Roche, Stephan, Power, Stephen R, Nikolić, Branislav K, García, José Hugo, Jauho, Antti-Pekka
Format: Article
Language:English
Subjects:
Graphene
Hall effect
Superlattices
Topology
Valleys
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