Dresden 2017 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 14: 2D Materials Beyond Graphene II (jointly with CPP)
DS 14.7: Vortrag
Montag, 20. März 2017, 17:30–17:45, REC/PHY C213
Structure determination of silicene nanoribbons on Ag(110) — •Philipp Espeter1, 2, Christoph Keutner1,2, Nils Fabian Kleimeier3, Peter Roese1,2, Karim Shamout1, 2, Gabi Wenzel3, Ulf Berges1,2, Helmut Zacharias3, and Carsten Westphal1,2 — 1Experimentelle Physik I, TU Dortmund, Otto-Hahn-Straße 4, D-44227 Dortmund, Germany — 2DELTA - Technische Universität Dortmund, Maria-Goeppert-Mayer-Str. 2, D-44227 Dortmund — 3Physikalisches Institut - WWU Münster, Wilhelm-Klemm-Str. 10, D-48149 Münster
Since the discovery of graphene much interest came up in graphene analoga from the carbon group. One of the most famous representatives is silicene. Silicene is known to crystallize in different configurations depending on the substrate, such as sheet growth on Ag(111) and nanoribbons on Ag(110). Whereas the structure of silicene sheets is already well known, the structure of silicene nanoribbons remains unclear.
In this study, we demonstrate a structure investigation of silicene nanoribbons on a Ag(110) substrate by means of photoelectron spectroscopy (XPS) and diffraction (XPD). These measurements provide chemical as well as structural information of silicene nanoribbons.
We assess several structure models suggested in literature, ranging from rectangular over pentagonal to hexagonal and from planar over buckled to stacked structures. We will also present a structure model which perfectly fits to the XPD and XPS data.