Giant Conductance Enhancement in Graphene Nanoscrolls via Interlayer-Coupled States

Abstract:Graphene nanoscrolls form a unique radial superlattice whose geometry enables transport behaviors distinct from their flat counterparts. We theoretically demonstrate that rolling a graphene nanoribbon into a few-turn nanoscroll (1.0-1.2 turns) triggers a giant enhancement in longitudinal conductance by an order of magnitude (nearly twentyfold). We show that this effect stems from interlayer hopping between open boundaries, which not only transforms localized edge states into one-dimensional-like conducting channels and also induces a significant Fermi energy shift. Our results reveal an inverse scaling of conductance with turn number, establishing GNSs as a platform for geometry-driven quantum transport and offering a tunable approach to engineering nanoarchitectural electronic states.

Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Materials Science (cond-mat.mtrl-sci); Applied Physics (physics.app-ph); Quantum Physics (quant-ph)

arXiv:2610.05881 [cond-mat.mes-hall]

(or arXiv:2610.05881v1 [cond-mat.mes-hall] for this version)

https://doi.org/10.48550/arXiv.2610.05881 arXiv-issued DOI via DataCite (pending registration)