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- W2912103916 abstract "We show that the spectrum of subbands in an electrostatically defined quantum wire in gapped bilayer graphene directly manifests the minivalley structure and reflects Berry curvature via the associated magnetic moment of the states in the low-energy bands of this two-dimensional material. We demonstrate how these appear in degeneracies of the low-energy minibands and their valley splitting, which develops linearly in a weak magnetic field. Consequently, magneto-conductance of a ballistic point contact connecting two non-gapped areas of a bilayer through a gapped (top and bottom gated) barrier would reflect such degeneracies by the heights of the first few conductance steps developing upon the increase of the doping of the BLG conduction channel: $8e^2/h$ steps in a wide channel in BLG with a large gap, $4e^2/h$ steps in narrow channels, all splitting into a staircase of $2e^2/h$ steps upon lifting valley degeneracy by a magnetic field." @default.
- W2912103916 created "2019-02-21" @default.
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- W2912103916 date "2018-08-10" @default.
- W2912103916 modified "2023-09-27" @default.
- W2912103916 title "How do minivalleys and Berry curvature influence electrostatically induced conduction channels in gapped bilayer graphene" @default.
- W2912103916 hasPublicationYear "2018" @default.
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