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Special CAMP Symposium: Spins in Graphene: Resonant scattering by magnetic impurities - Fluorine on Graphene

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Susanne Irmer, University of Regensburg
When
11 March 2016 from 2:45 PM to 3:15 PM
Where
339 Davey Laboratory
Contact Name
Jun Zhu
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Tailoring the spin and magnetic properties of graphene is of strong interest for spintronics research. One way to achieve this, is the functionalization of graphene with light admolecules or adatoms, such as fluorine. Besides the predicted local enhancement of spin-orbit coupling in dilute fluorinated graphene [1], a fluorine induced magnetic moment is still under discussion. 

In this talk, we will present our model of resonant scattering by magnetic impurities on both monolayer and bilayer graphene [2, 3]. We find nice agreement with the experimental data on fluorine on graphene that was obtained in Prof. J. Zhu's group. Within our model, uorine induces a magnetic moment with an exchange coupling of J = 0:4 eV. We believe that our results can thus clearify the theoretical debate on the magnetic moment of fluorine on graphene.

References
[1] S. Irmer, T. Frank, S. Putz, M. Gmitra, D. Kochan, and J. Fabian, Phys. Rev. B 91, 115141 (2015).
[2] D. Kochan, M. Gmitra, and J. Fabian, Phys. Rev. Lett. 112, 116602 (2014).
[3] D. Kochan, S. Irmer, M. Gmitra, and J. Fabian, Phys. Rev. Lett. 115, 196601 (2015).

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