Berlin 2015 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 33: Graphene

O 33.5: Poster

Dienstag, 17. März 2015, 18:15–21:00, Poster A

Local properties of graphene nanoribbons with well-controlled structural variations — •Christian Härtinger, Fabian Queck, and Jascha Repp — Institute of Experimental and Applied Physics, University of Regensburg, D-93040 Regensburg

Atomically well-defined graphene nanoribbons can be grown by bottom-up on-surface chemistry [1], which allows for a detailed analysis by scanning probe microscopy and spectroscopy methods. This synthesis can be even extended to grow graphene nanoribbon heterostructures with a local variation of doping [2]. Here, instead we implement local structural variations of a nanoribbon on an Au(111) substrate by introducing suitable precursor molecules in the synthesis process. The influences of these structural variations on the local electronic properties are studied at low temperatures of 5 K by means of scanning probe microscopy and spectroscopy.

[1] Cai et al., Nature 466, 470-473 (2010)

[2] Cai et al., Nature nanotechnology 9, 896-900 (2014)