2022
DOI: 10.48550/arxiv.2204.07737
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Trivial and topological bound states in bilayer graphene quantum dots and rings

Nassima Benchtaber,
David Sánchez,
Llorenç Serra

Abstract: We discuss and compare two different types of confinement in bilayer graphene by top and bottom gating with symmetrical microelectrodes. Trivial confinement corresponds to the same polarity of all top gates, which is opposed to that of all bottom ones. Topological confinement requires the polarity of part of the top-bottom pairs of gates to be reversed. We show that the main qualitative difference between trivial and topological bound states manifests itself in the magnetic field dependence. We illustrate our … Show more

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