Ontology highlight
ABSTRACT:
SUBMITTER: Chen H
PROVIDER: S-EPMC7058031 | biostudies-literature | 2020 Mar
REPOSITORIES: biostudies-literature
Nature communications 20200305 1
Sign reversal of Berry curvature across two oppositely gated regions in bilayer graphene can give rise to counter-propagating 1D channels with opposite valley indices. Considering spin and sub-lattice degeneracy, there are four quantized conduction channels in each direction. Previous experimental work on gate-controlled valley polarizer achieved good contrast only in the presence of an external magnetic field. Yet, with increasing magnetic field the ungated regions of bilayer graphene will tran ...[more]