Single or multi-flavor Kondo effect in graphene

Details Single or multi-flavor Kondo effect in graphene Single or multi-flavor Kondo effect in graphene

2010-06-09

arxiv.org/abs/1006.1773v1

EPL 90 (2010) 67001

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 1 fures, 2 tables, accepted by EPL

Scientific paper

Based on the tight-binding formalism, we investigate the Anderson and the Kondo model for an adaom magnetic impurity above graphene. Different impurity positions are analyzed. Employing a partial wave representation we study the nature of the coupling between the impurity and the conducting electrons. The components from the two Dirac points are mixed while interacting with the impurity. Two configurations are considered explicitly: the adatom is above one atom (ADA), the other case is the adatom above the center the honeycomb (ADC). For ADA the impurity is coupled with one flavor for both A and B sublattice and both Dirac points. For ADC the impurity couples with multi-flavor states for a spinor state of the impurity. We show, explicitly for a 3d magnetic atom, $d_{z^{2}}$, ($d_{xz}$,$d_{yz}$), and ($d_{x^{2}-y^{2}}$,$d_{xy}$) couple respectively with the $\Gamma_{1}$, $\Gamma_{5} (E_{1})$, and $\Gamma_{6} (E_{2})$ representations (reps) of $C_{6v}$ group in ADC case. The basses for these reps of graphene are also derived explicitly. For ADA we calculate the Kondo temperature.

Affiliated with

Also associated with

No associations

Rating

Single or multi-flavor Kondo effect in graphene does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Single or multi-flavor Kondo effect in graphene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single or multi-flavor Kondo effect in graphene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-39730