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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Castelino, Roshan
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article
Preparation of single phase 2H-MoTe2 films by molecular beam epitaxy
Abstract
<p>The controlled growth of mono-/double-layer 2H-MoTe<sub>2</sub> fully covering the substrate is highly desirable for the future of device fabrication but still remains a challenge. In this study, we present growth of mono-/double-layer 2H-MoTe<sub>2</sub> films on graphene terminated 6H-SiC(0 0 0 1) substrates by molecular beam epitaxy (MBE). We develop two distinct processes which achieve better layer-by-layer controllability of stoichiometric films. We further provide a coherent explanation for the Moiré patterns together with the formation of semi-coherent twin boundaries (TBs) in the films and the electronic structure of the films. Our materials are analyzed in detail by reflection high energy electron diffraction (RHEED), X-ray photoemission spectroscopy (XPS), and scanning tunneling microscopy/spectroscopy (STM/STS).</p>