Regensburg 2019 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 87: 2D Materials IV: Charge Density Waves and Electronic Properties
O 87.7: Vortrag
Donnerstag, 4. April 2019, 16:30–16:45, H25
Growth and properties of VS2 nanostructures on Au(111) — •Sabina Simon, Felix Förschner, Jannik Dornseiff, Julia Tesch, and Mikhail Fonin — Department of Physics, University of Konstanz, 78457 Konstanz, Germany
Transition metal dichalcogenides present enormous scientific interest due to their diverse properties, which can be uniquely tailored by the nature of the components, number of layers or the stacking order of the crystal. Recent theoretical calculations predict an intricate magnetic behaviour for 2D monolayers of VS2 [1,2], which depends on its structure and chemical composition, thus propelling this material into the focus of an active research.
In this work we discuss the epitaxial growth of VS2 nanostructures (nanoislands and nanoribbons) on Au(111). By means of low-temperature scanning tunneling microscopy we investigate the influence of growth parameters upon the structure and chemical composition of the VS2 nanostructures. Local spectroscopic measurements reveal strong variations of the electronic properties at the atomic level due to the interaction with the substrate and the presence of sulphur defects.
[1] Y. Ma et. al., ACS Nano 6, 1695 - 1701 (2012).
[2] D. Gao et al., J. Mater. Chem. 1, 5909 - 5916 (2013).