Berlin 2012 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 54: Nanostructures at surfaces II

O 54.8: Vortrag

Mittwoch, 28. März 2012, 18:30–18:45, MA 042

Transition metal adatoms on Rh(111) supported monolayer boron nitride — •Fabian Donat Natterer, François Patthey, and Harald Brune — Institute of Condensed Matter Physics (ICMP), Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland

The low temperature adsorption of transition metal (TM) adatoms (Ti, Cr, Mn, Fe and Co) onto Rh(111) supported boron nitride (BN) monolayers leads to different behaviors. A bistable adsorption complex is found for Mn, Fe and Co. One of its states strongly weakens the boron nitride substrate binding of more than 100 boron and nitrogen atoms. In consequence, the BN layer locally acts as a soft membrane that is elastically deformed in the presence of the scanning tunneling microscope tip. For Ti and Cr, different spectral features are observed depending on the hydrogen exposure, showing a concomitant modification of the TM adatom electronic structure.