Interplay between topological valley and quantum Hall edge transport.

ABSTRACT: An established way of realising topologically protected states in a two-dimensional electron gas is by applying a perpendicular magnetic field thus creating quantum Hall edge channels. In electrostatically gapped bilayer graphene intriguingly, even in the absence of a magnetic field, topologically protected electronic states can emerge at naturally occurring stacking domain walls. While individually both types of topologically protected states have been investigated, their intriguing interplay remains poorly understood. Here, we focus on the interplay between topological domain wall states and quantum Hall edge transport within the eight-fold degenerate zeroth Landau level of high-quality suspended bilayer graphene. We find that the two-terminal conductance remains approximately constant f

SUBMITTER: Geisenhof FR 

PROVIDER: S-EPMC9300606 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature