Fabrication of van der Waals heterostructures
Hybrid Quantum Systems

2D materials can be easily fabricated using exfoliation due to the weak out-of-plane van der Waals forces bonding adjacent layers. The exfoliation process is greatly advantaged by the low level of damage caused either to the remaining structure or to the extracted layer. If you are interested in, please refer to our advanced lab course "The Quantum Canvas"

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Obtained monolayers can then be transferred to any substrate, encapsulated, or created heterostructures using a transfer system. We work with a manual transfer system (HQ graphene) and a camera with imaging software to control the fabrication process. To store obtained samples, we use dry or vacuum desiccators preventing samples from degradation. To improve adhesion and remove surface residues, the substrate is cleaned using oxygen plasma treatment (Diener electronic).

Related publications:

“Colloquium: Excitons in atomically thin transition metal dichalcogenides” G Wang, A Chernikov, M. M. Glazov, T. F. Heinz, X. Marie, T. Amand, B. Urbaszek,
Reviews of Modern Physics, 90, 021001(2018)

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“Excitonic Linewidth Approaching the Homogeneous Limit in MoS2-Based van der Waals Heterostructures”, F. Cadiz, E. Courtade, C. Robert, G. Wang, Y. Shen, H. Cai, T. Taniguchi, K. Watanabe, H. Carrere, D. Lagarde, M. Manca, T. Amand, P. Renucci, S. Tongay, X. Marie, and B. Urbaszek, Phys. Rev. X 7, 021026 (2017)

Link