Figure 1
From: Quasi-bound states in an NPN-type nanometer-scale graphene quantum dot under a magnetic field
Energy band of an NPN-type graphene quantum dot with Fermi energy \(E_{F}\) and potential V(r). Quasi-bound states are formed in section \({\mathrm {P}}\), and the substrate is section \({\mathrm {N}}\), where the V(r) is higher in section \({\mathrm {P}}\) than in section \({\mathrm {N}}\).
