Berlin 2012 – scientific programme
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O: Fachverband Oberflächenphysik
O 41: Graphene III
O 41.7: Talk
Wednesday, March 28, 2012, 12:00–12:15, MA 041
Structural and electronic properties of the graphene/Al/ Ni(111) intercalation system — •Elena Voloshina1, Martin Weser2, Stefan Böttcher2, Karsten Horn2, and Yuriy Dedkov2,3,4 — 1Physikalische und Theoretische Chemie, Freie Universität Berlin, Germany — 2Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany — 3Institut für Festkörperphysik, Technische Universität Dresden, Germany — 4SPECS Surface Nano Analysis GmbH, Germany
The atomic and electronic structure of the graphene/Al/Ni(111) system is studied via combination of experimental methods and density functional theory calculations. It has been demonstrated, that the graphene layer can be effectively decoupled from the ferromagnetic substrate via intercalation of the sp metal [1]. Despite the symmetry in the graphene lattice is broken in the trilayer under consideration, there is no sizable energy gap for the π states around the K point of Brillouin zone. In this talk, properties of graphene/Ni(111) and graphene/Al/Ni(111) are compared. The perspectives of application of the Al-based intercalation-like systems are discussed.
[1] E. N. Voloshina, A. Generalov, M. Weser, S. Boettcher, K. Horn, Yu. S. Dedkov, arXiv:1108.3002 (2011); New. J. Phys. (accepted).