Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 41: Graphene III
O 41.6: Vortrag
Mittwoch, 28. März 2012, 11:45–12:00, MA 041
Spin-polarized STM of cobalt intercalated graphene/Ir(111) — •Régis Decker1, Jens Brede1, Nicolae Atodiresei2, Vasile Caciuc2, Stefan Blügel2, and Roland Wiesendanger1 — 1Institute of Applied Physics, University of Hamburg, Jungiusstrasse 11, D-20355 Hamburg — 2Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich
It has been shown that graphite intercalation compounds present peculiar characteristics such as dramatic changes in the transport, optical and catalytic properties compared to bulk graphite, or even superconductivity. The intercalation of elements between graphene and its substrate can also influence the properties of graphene. In particular, this approach opens a new route to explore the behavior of graphene on a magnetic substrate.
Here, using the spin-polarized STM technique, we are able to study the structure, as well as the local electronic and magnetic properties of graphene on a magnetic substrate, where the magnetic substrate is obtained by the intercalation of a cobalt layer between graphene and an Ir(111) surface. The experimental results are compared to DFT calculations.