Origin of nonlocal resistance in multiterminal graphene on hexagonal-boron-nitride: Fermi surface edge currents rather than Fermi sea topological valley currents

J. M. Marmolejo-Tejada, J. H. García, M. Petrović +6

The recent observation [R. V. Gorbachev et al., Science {\bf 346}, 448 (2014)] of nonlocal resistance $R_{\mathrm{NL}}$ near the Dirac point (DP) of multiterminal graphene on aligned…