Edge modes in chiral electron double layers
arXiv:2412.16760 · doi:10.1103/PhysRevB.111.L140507
Abstract
We study the quasiparticles in chiral double layers with electron pairing within the framework of the Bogoliubov de Gennes equation. In the presence of an edge it is demonstrated that the quasiparticle modes can be distinguished as edge modes and bulk modes, which appear at different energies. The bulk-edge correspondence is obtained by an analytic continuation from the in-gap edge modes to the bands of bulk modes. By varying the energy we find a transition from localized edge modes to delocalized bulk modes. We calculate the quasiparticle currents, discuss briefly how these currents couple to external currents, and predict how this can be used to control the quasiparticle modes.
6 pages, 4 figures
References in corpus (6)
- Evidence of high-temperature exciton condensation in 2D atomic double layers
- Valley symmetry breaking and gap tuning in graphene by spin doping
- Collective interlayer pairing and pair superfluidity in vertically stacked layers of dipolar excitons
- Anomalous Josephson effect of s-wave pairing states in chiral double layers
- Josephson effect as signature of electron-hole superfluidity in bilayers of van der Waals heterostructures
- Chiral Josephson effect in double layers: the role of particle-hole duality