1206.4455 (S. Lipinski et al.)

Kondo effect near the Van Hove singularity in biased bilayer graphene    [PDF]

S. Lipinski, D. Krychowski

Magnetic impurity adsorbed on one of the carbon planes of a bilayer graphene is studied. The formation of the many-body SU(2) and SU(4) resonances close to the bandgap is analyzed within the mean field Kotliar-Ruckenstein slave boson approach. Impact of enhanced hybridization and magnetic instability of bilayer doped near the Van Hove singularity on the screening of magnetic moment is discussed.

View original: http://arxiv.org/abs/1206.4455