Figure 4: Schematic illustration of the classical magneto-decoupling of the RBS. | Nature Communications

Figure 4: Schematic illustration of the classical magneto-decoupling of the RBS.

From: Quantum and classical confinement of resonant states in a trilayer graphene Fabry-Pérot interferometer

Figure 4

(a) At zero magnetic field (B), carriers are injected from the GL into low parallel momentum (k||) states in the LGR, resulting in transport through the RBS and giant oscillations in the resistance. (b) As the magnetic field increases, quasiparticles gain , as they cross the LGR; L is the size of the LGR, is Plank’s constant divided by 2π and e is the elementary charge. Although trajectories for which are excluded from ballistic transport, some ballistic transport is still possible via the RBS; is the Fermi momentum in the GLs. (c) For magnetic field larger than the critical magnetic field, , ballistic transport via the RBS is no longer possible. Charge transport proceeds by momentum nonconserving channels that do not involve the RBS, likely mediated by impurity scattering within the LGR, and the giant oscillations disappear.

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