Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 14: 2D Materials: Session II (joint session DS/CPP/HL)
HL 14.5: Vortrag
Dienstag, 13. März 2018, 10:30–10:45, H 2032
Chemical vapour growth and delamination of α-MCl3 nanosheets (M = Ru, Mo, Ti) — •Martin Grönke1,2, Silke Hampel1, Peer Schmidt2, Danny Pohflepp1, Nadine Bronkalla1, and Bernd Büchner1 — 1Leibniz Institute for Solid State and Materials Research, Dresden, Germany — 2Brandenburg University of Technology Cottbus-Senftenberg, Germany
The two dimensional honeycomb structure of graphene with one monoatomic layer gave an idea to the introduction of other materials with congeneric pattern. Next to carbon based graphene, black phosphorus and binary transition metal chalkogenides, transition metal halides were highly profiled in theory. Among the interest for different materials with strong anisotropic bonding-dependent interactions, resulting frustration effects in honeycomb structures could stabilize new pattern of cooperative magnetic interactions. One candidate to realize a Kitaev Heisenberg (KH) model is the 2D layered honeycomb magnet α-Rutheniumtrichloride (α-RuCl3). Physical properties in nanoscale systems may differ from the respective bulk phase and could even lead to novel physical properties. We herein present to our knowledge the first approach to synthesize phase pure α-RuCl3 crystals on the nanoscale on a substrate via chemical vapour transport (CVT). Beyond that we reveal capabilities to generate thin 2D structures of isostructural compounds like α-MoCl3 and α-TiCl3 on a suitable substrate by means of CVT. Furthermore we show how to increase the number of nanosheets on as grown substrates by different delamination techniques.