Aharonov–Bohm effect in bilayer graphene

Abstract We investigate Aharonov–Bohm effect in bilayer graphene. We consider a setup of n – p ( n ′ ) – n junction with Aharonov–Bohm loop connected in the transmission region. In the presence of trigonal warping we show that, due to the anisotropic dispersion of eigenspectrum, the Aharonov–Bohm interference depends on the geometry of junction: it exists for armchair interface but vanishes for zigzag interface. For the armchair interface, it is demonstrated that the period of Aharonov–Bohm oscillation is Φ 0 = h / e and the amplitude of oscillation can be varied with incident energy and the barrier height of the junction.