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Graphene ribbon growth on structured silicon carbide

Stohr, Alexander, Baringhaus, Jens, Aprojanz, Johannes, Link, Stefan, Tegenkamp, Christoph, Niu, Yuran ORCID:, Zakharov, Alexei A., Chen, Chaoyu, Avila, José, Asensio, Maria C. and Starke, Ulrich 2017. Graphene ribbon growth on structured silicon carbide. Annalen der Physik 529 (11) , 1700052. 10.1002/andp.201700052

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Structured Silicon Carbide was proposed to be an ideal template for the production of arrays of edge specific graphene nanoribbons (GNRs), which could be used as a base material for graphene transistors. We prepared periodic arrays of nanoscaled stripe-mesas on SiC surfaces using electron beam lithography and reactive ion etching. Subsequent epitaxial graphene growth by annealing is differentiated between the basal-plane mesas and the faceting stripe walls as monitored by means of atomic force microscopy (AFM). Microscopic low energy electron diffraction (μ-LEED) revealed that the graphene ribbons on the facetted mesa side walls grow in epitaxial relation to the basal-plane graphene with an armchair orientation at the facet edges. The ¼- band system of the ribbons exhibits linear bands with a Dirac like shape corresponding to monolayer graphene as identified by angle-resolved photoemission spectroscopy (ARPES).

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Epitaxial graphene, Nanoribbons, Silicon carbide, Side walls, Facets, LEEM, ARPES, AFM
Publisher: Wiley
ISSN: 0003-3804
Date of First Compliant Deposit: 29 June 2017
Date of Acceptance: 20 April 2017
Last Modified: 19 Nov 2023 16:26

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