Berlin 2024 – scientific programme
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O: Fachverband Oberflächenphysik
O 79: 2D Materials V: Growth, Structure and Substrate Interaction
O 79.9: Talk
Thursday, March 21, 2024, 12:30–12:45, MA 005
Atomically thin transition metal halide NiBr2 grown on Au(111) — •Daniel Rothhardt1,2,3, Zuned Ahmend1,2, Christopher Penschke4, Hao Liu1,2, Regina Hoffmann-Vogel3, Peter Saalfrank4, Hans Josef Hug1,2, and Amina Kimouche3 — 1Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland — 2Department of Physics, University of Basel, CH-4056 Basel, Switzerland — 3Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam-Golm, Germany — 4Institute of Chemistry, University of Potsdam, 14476 Potsdam-Golm, Germany
In recent years, two-dimensional (2D) van der Waals materials have emerged as a new platform for studying low-dimensional quantum phenomena. Due to their limited symmetry, they display electrical, optical, and magnetic properties that are different compared to their 3D counterparts. As novel 2D materials, transition metal dihalides (TMHs) emerge as promising platform for stable ferro- or antiferromagnetic ordering in two dimensions. Epitaxial single-layer TMHs require accurate control of the growth parameters and an improved understanding of the interactions between TMHs and the surface. In this work, we employ frequency-modulated scanning force microscopy in the non-contact mode, combined with Kelvin probe microscopy and scanning tunneling microscopy, to examine various phases and layer thicknesses of NiBr2 on Au(111) revealing a complicated growth mode in the low coverage regime.
Keywords: Two Dimensional Materials; 2D Magnetism; Scanning Force Microscopy; Magnetic Force Microscopy; Epitaxial Growth