"Spin density wave and triplet superconductivity in biased AB bilayer graphene" by Prof. Rakhmanov

February 21 at 15:00, Moscow time, ACTP will hold the seminar on "Spin density wave and triplet superconductivity in biased AB bilayer graphene" by Prof. Alexander L. Rakhmanov (Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences)

Abstract

We examine spin density wave and triplet superconductivity as possible ground states of the AB (Bernal) bilayer graphene. The spin density wave is stable for the unbiased and undoped bilayer. Both the doping and the applied bias voltage destroy this phase. We show that, when biased and slightly doped, a bilayer can host a triplet superconducting phase. The mechanisms for both ordered phases rely on the renormalized Coulomb interaction. The consistency of our theoretical conclusions with recent experimental results is discussed.