title: Atomically Sharp Interface in an h-BN-epitaxial graphene van der Waals Heterostructure.
abstract: Stacking various two-dimensional atomic crystals is a feasible approach to creating unique multilayered van der Waals heterostructures with tailored properties. Herein for the first time, we present a controlled preparation of large-area h-BN/graphene heterostructures via a simple chemical deposition of h-BN layers on epitaxial graphene/SiC(0001). Van der Waals forces, which are responsible for the cohesion of the multilayer system, give rise to an abrupt interface without interdiffusion between graphene and h-BN, as shown by X-ray Photoemission Spectroscopy (XPS) and direct observation using scanning and High-Resolution Transmission Electron Microscopy (STEM/HRTEM). The electronic properties of graphene, such as the Dirac cone, remain intact and no significant charge transfer i.e. doping, is observed. These results are supported by Density Functional Theory (DFT) calculations. We demonstrate that the h-BN capped graphene allows the fabrication of vdW heterostructures without altering the electronic properties of graphene.
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, route de Nozay, F-91460 Marcoussis, France.
authors.forename: Haikel
authors.initials: H
authors.lastname: Sediri
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, route de Nozay, F-91460 Marcoussis, France.
authors.forename: Debora
authors.initials: D
authors.lastname: Pierucci
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, route de Nozay, F-91460 Marcoussis, France.|Synchrotron-SOLEIL, Saint-Aubin, BP48, F91192 Gif sur Yvette Cedex, France.
authors.forename: Mahdi
authors.initials: M
authors.lastname: Hajlaoui
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, route de Nozay, F-91460 Marcoussis, France.
authors.forename: Hugo
authors.initials: H
authors.lastname: Henck
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, route de Nozay, F-91460 Marcoussis, France.
authors.forename: Gilles
authors.initials: G
authors.lastname: Patriarche
authors.affiliation: SPEC, CEA, CNRS, Université Paris Saclay, CEA Saclay, 91191, Gif-Sur-Yvette, France.
authors.forename: Yannick J
authors.initials: YJ
authors.lastname: Dappe
authors.affiliation: Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Université Lyon I, Université de Lyon, France.
authors.forename: Sheng
authors.initials: S
authors.lastname: Yuan
authors.affiliation: Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Université Lyon I, Université de Lyon, France.
authors.forename: Bérangère
authors.initials: B
authors.lastname: Toury
authors.affiliation: Synchrotron-SOLEIL, Saint-Aubin, BP48, F91192 Gif sur Yvette Cedex, France.
authors.forename: Rachid
authors.initials: R
authors.lastname: Belkhou
authors.affiliation: Synchrotron-SOLEIL, Saint-Aubin, BP48, F91192 Gif sur Yvette Cedex, France.
authors.forename: Mathieu G
authors.initials: MG
authors.lastname: Silly
authors.affiliation: Synchrotron-SOLEIL, Saint-Aubin, BP48, F91192 Gif sur Yvette Cedex, France.
authors.forename: Fausto
authors.initials: F
authors.lastname: Sirotti
authors.affiliation: GeePs, CNRS UMR8507, CentraleSupelec, Univ Paris-Sud, Sorbonne Universités-UPMC Univ Paris 06, 11 rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex, France.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Boutchich
authors.affiliation: Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, route de Nozay, F-91460 Marcoussis, France.
authors.forename: Abdelkarim
authors.initials: A
authors.lastname: Ouerghi