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Dresden 2017 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 14: 2D Materials Beyond Graphene II (jointly with CPP)

DS 14.8: Vortrag

Montag, 20. März 2017, 17:45–18:00, REC/PHY C213

Angle-resolved IPE Study of Silicene Nanoribbons on Ag(110) — •Gabi Wenzel, Nils Fabian Kleimeier, and Helmut Zacharias — Physikalisches Institut - WWU Münster, Wilhelm-Klemm-Str. 10, 48149 Münster

Silicene, a two-dimensional buckled honeycomb lattice of silicon atoms, has attracted great interest in the scientific community. To investigate its electronic properties, unoccupied electronic states of silicene nanoribbons grown on Ag(110) were measured by k-resolved inverse photoemission spectroscopy (KRIPES) in ultra-high vacuum conditions. The IPE setup consisted of a modified Erdmann-Zipf electron gun and an acetone filled Geiger-Müller tube with a CaF2 window acting as a bandpass filter.

The measurements in ΓX direction show two main features: one almost linearly dispersing state from 3.2 eV at Γ to 6.2 eV at X, the other depicting a linear continuation of the Dirac cone like feature around the X point from 0 eV to 5.8 eV.

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