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O: Fachverband Oberflächenphysik

O 41: Graphene III

O 41.7: Vortrag

Mittwoch, 28. März 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 Dedkov^2,3,4 — 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).