Kondo effect near the Van Hove singularity in biased bilayer graphene
S. Lipinski, D. Krychowski
TL;DR
This paper investigates the Kondo effect in biased bilayer graphene with magnetic impurities, focusing on how Van Hove singularities influence magnetic screening and many-body resonances.
Contribution
It introduces a mean field approach to analyze SU(2) and SU(4) Kondo resonances near the bandgap in bilayer graphene with impurities.
Findings
Enhanced hybridization near Van Hove singularity affects magnetic screening.
Magnetic instability influences the formation of many-body resonances.
The study provides insights into impurity behavior in doped bilayer graphene.
Abstract
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.
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