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Nano Research 2018, 11(9): 4643-4653 https://doi.org/10.1007/s12274-018-2045-5
Research Article | Issue | Published: 14 April 2018

Influence of metal support in-plane symmetry on the corrugation of hexagonal boron nitride and graphene monolayers

Show Author's Information Antonio J. Martínez-Galera1( ),  José M. Gómez-Rodríguez1,2,3
Departamento de Física de la Materia CondensadaUniversidad Autónoma de MadridMadridE-28049Spain
Condensed Matter Physics Center (IFIMAC)Universidad Autónoma de MadridMadridE-28049Spain
nstituto Nicolás CabreraUniversidad Autónoma de MadridMadridE-28049Spain
Keywords:
graphene, hexagonal boron nitride, scanning tunneling microscopy, 2-dimensional materials, moiré superstructures, nanotemplates
An erratum to this article is available online at https://doi.org/10.1007/s12274-019-2365-0
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Martínez-Galera AJ, Gómez-Rodríguez JM. Influence of metal support in-plane symmetry on the corrugation of hexagonal boron nitride and graphene monolayers. Nano Research, 2018, 11(9): 4643-4653. https://doi.org/10.1007/s12274-018-2045-5
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Abstract Full text Electronic supplementary material About this article

Predicting the properties of two-dimensional (2D) materials as graphene and hexagonal boron nitride (h-BN) monolayers after their growth on any given substrate is a major challenge. While the influence of the electron configuration of the atoms of the underlying surface is well-understood, the effect of substrate geometry still remains unclear. The structural properties of h-BN monolayers grown on a rectangularly packed Rh(110) surface were characterized in situ by ultrahigh vacuum scanning tunneling microscopy and were compared to those that this material exhibits when grown on substrates showing different crystallographic orientations. Although the h-BN monolayer grown on Rh(110) was dominated by a unique quasiunidimensional moiré pattern, suggesting considerable interface interaction, the moiré corrugation was unexpectedly smaller than those reported for strongly interacting interfaces with hexagonal-terminated substrates, owing to differences in the possible binding landscapes at interfaces with differently oriented substrates. Moreover, a rule was derived for predicting how interface corrugation and the existence and extent of subregions within moiré supercells containing favorable sites for orbital mixing between h-BN monolayers and their supports depend on substrate symmetry. These general symmetry considerations can be applied to numerous 2D materials, including graphene, thereby enabling the prediction of how substrate choice determines the properties of these materials. Furthermore, they could also provide new routes for tuning 2D material properties and for developing nanotemplates showing different geometries for growing adsorbate superlattices.


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Electronic supplementary material
About this article

Influence of metal support in-plane symmetry on the corrugation of hexagonal boron nitride and graphene monolayers

Show Author's information Antonio J. Martínez-Galera1( ), José M. Gómez-Rodríguez1,2,3
Departamento de Física de la Materia CondensadaUniversidad Autónoma de MadridMadridE-28049Spain
Condensed Matter Physics Center (IFIMAC)Universidad Autónoma de MadridMadridE-28049Spain
nstituto Nicolás CabreraUniversidad Autónoma de MadridMadridE-28049Spain

Abstract

Predicting the properties of two-dimensional (2D) materials as graphene and hexagonal boron nitride (h-BN) monolayers after their growth on any given substrate is a major challenge. While the influence of the electron configuration of the atoms of the underlying surface is well-understood, the effect of substrate geometry still remains unclear. The structural properties of h-BN monolayers grown on a rectangularly packed Rh(110) surface were characterized in situ by ultrahigh vacuum scanning tunneling microscopy and were compared to those that this material exhibits when grown on substrates showing different crystallographic orientations. Although the h-BN monolayer grown on Rh(110) was dominated by a unique quasiunidimensional moiré pattern, suggesting considerable interface interaction, the moiré corrugation was unexpectedly smaller than those reported for strongly interacting interfaces with hexagonal-terminated substrates, owing to differences in the possible binding landscapes at interfaces with differently oriented substrates. Moreover, a rule was derived for predicting how interface corrugation and the existence and extent of subregions within moiré supercells containing favorable sites for orbital mixing between h-BN monolayers and their supports depend on substrate symmetry. These general symmetry considerations can be applied to numerous 2D materials, including graphene, thereby enabling the prediction of how substrate choice determines the properties of these materials. Furthermore, they could also provide new routes for tuning 2D material properties and for developing nanotemplates showing different geometries for growing adsorbate superlattices.

Keywords: graphene, hexagonal boron nitride, scanning tunneling microscopy, 2-dimensional materials, moiré superstructures, nanotemplates

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Publication history
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Acknowledgements

Publication history

Received: 22 December 2017
Revised: 09 February 2018
Accepted: 07 March 2018
Published: 14 April 2018
Issue date: September 2018

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Acknowledgements

Acknowledgements

Authors acknowledge financial support from AEI and FEDER under project MAT2016-77852-C2-2-R (AEI/FEDER, UE). A. J. M.-G. acknowledges funding from the Spanish MINECO through the Juan de la Cierva program (ref. IJCI-2014-19209).

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