Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime

Details Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime

2009-05-28

arxiv.org/abs/0905.4548v1

Eur. Phys. Lett. 86, 58004 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted by EPL

Scientific paper

The Kondo effect in the system consisting of a magnetic adatom on the graphene is studied. By using the non-equilibrium Green function method with the slave-boson mean field approximation, the local density of state (LDOS) and the conductance are calculated. For a doped graphene, the Kondo phase is present at all time. Surprisingly, two kinds of Kondo regimes are revealed. But for the undoped graphene, the Kondo phase only exists if the adatom's energy level is beyond a critical value. The conductance is similar to the LDOS, thus, the Kondo peak in the LDOS can be observed with the scanning tunneling spectroscopy. In addition, in the presence of a direct coupling between the STM tip and the graphene, the conductance may be dramatically enhanced, depending on the coupling site.

Affiliated with

Also associated with

No associations

Rating

Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime 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 Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-293181