Disorder-induced magneto-oscillations in bilayer graphene at high bias

Abstract

The energy spectrum of biased bilayer graphene near the bottom has a ``Mexican-hat''-like shape. For the Fermi level within the Mexican hat, we predict that, apart from conventional magneto-oscillations that vanish with temperature, there are additional magneto-oscillations that are weakly sensitive to temperature. These oscillations are also insensitive to a long-range disorder. Their period in magnetic field scales with bias $V$ as ${V}^{2}$. The origin of these oscillations is the disorder-induced scattering between electronlike and holelike Fermi surfaces, specific to the Mexican hat.