journal article·2022-04-01Open access

Have mysterious topological valley currents been observed in graphene superlattices?

Stephan Roche, Stephen R Power, Branislav K Nikolić, José Hugo García, Antti-Pekka Jauho

Journal of Physics: Materials· Volume 5· Issue 2

Abstract

Abstract 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 discuss various possible alternative explanations and open directions of research to solve the mystery of nonlocal transport in graphene superlattices.
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Research context

OpenAlex topics: Graphene research and applications · Advanced Memory and Neural Computing · Topological Materials and Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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