Deciphering the origin of nonlocal resistance in multiterminal graphene on hexagonal-boron-nitride with ab initio quantum transport: Fermi surface edge currents rather than Fermi sea topological valley currents

The recent observation (Gorbachev et al 2014 Science 346 448) of nonlocal resistance RNL near the Dirac point (DP) of multiterminal graphene on aligned hexagonal-boron nitride (G/hBN) has been interpreted as the consequence of topological valley Hall currents carried by the Fermi sea states just ben...

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Veröffentlicht in:	JPhys materials 2018-12, Vol.1 (1), p.15006
Hauptverfasser:	Marmolejo-Tejada, J M, García, J H, Petrovi, M D, Chang, P-H, Sheng, X-L, Cresti, A, Plechá, P, Roche, S, Nikoli, B K
Format:	Artikel
Sprache:	eng
Schlagworte:	Berry curvature Boron nitride Broken symmetry calculations Condensed Matter Dispersion edge states Fermi surfaces Graphene nonlocal resistance Physics Quantum transport quantum transport simulations Sea currents Sea states Topology valley Hall effect Valleys van der Waals heterostructures
Online-Zugang:	Volltext
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