Decoupling of graphene from Ni(111) via formation of an interfacial NiO layer

Dedkov, Yuriy; Klesse, Wolfgang M.; Becker, Andreas; Späth, Florian; Papp, Christian; Voloshina, Elena

doi:10.1016/j.carbon.2017.05.068

Cited by 38 publications

(59 citation statements)

References 56 publications

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“…4: (c) and inset of (i)) confirming the effective decoupling of graphene from the underlying NiO layer. The decoupling of graphene from NiO is also supported by the present XPS data as well as by the recent ARPES and density-functional theory (DFT) studies [30] where p-doping of graphene was observed.…”

Section: Oxygen Intercalation In Gr/n Ml-ni/ir(111): Stm Morphologysupporting

confidence: 85%

Intercalation of O₂ and N₂ in the Graphene/Ni Interfaces of Different Morphologies

Zhao

Dai

et al. 2019

J. Phys. Chem. C

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Near-ambient pressure XPS and STM experiments are performed to study the intercalation of oxygen and nitrogen at different partial gas pressures and different temperatures in the graphene/Ni/Ir(111) system of different morphologies. We performed detailed experiments on the investigation of the chemical state and topography of graphene, before and after gas intercalation, depending on the amount of pre-intercalated Ni in graphene/Ir(111). It is found that only oxygen can be intercalated under graphene in all considered cases, indicating the role of the intra-molecular bonding strength and possibility of gas molecules dissociation on different metallic surfaces on the principal possibility and on the mechanism of intercalation of different species under graphene. This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in J. Phys.

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Section: Oxygen Intercalation In Gr/n Ml-ni/ir(111): Stm Morphologysupporting

confidence: 85%

Intercalation of O₂ and N₂ in the Graphene/Ni Interfaces of Different Morphologies

Zhao

Dai

et al. 2019

J. Phys. Chem. C

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“…[53,54] Experimental Section The bondedo xygen mostly desorbs at approximately 580 K, with partial reaction to boron oxides.…”

Section: Discussionmentioning

confidence: 99%

“…Only increased temperatures and orders of magnitude highero xygen pressure have resulted in intercalation. [53,54] Experimental Section…”

Section: Discussionmentioning

confidence: 99%

Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

Späth

Soni

Steinhauer

et al. 2019

Chemistry A European J

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The interaction of single-layer hexagonal boron nitride (h-BN) on Ni(111)w ith molecular oxygen from as upersonic molecular beam led to ac ovalently bonded molecular oxygen species, which was identified as being between as uperoxide and aperoxide. This is arareexample of an activated adsorption process leadingt oam olecular adsorbate. The amount of oxygen functionalization depended on the kinetic energy of the molecular beam.F or ak inetic energy of 0.7 eV,a no xygen coverage of 0.4 ML was found. Near-edge X-ray adsorption fine structure (NEXAFS) spectroscopy revealed as tronger bond of h-BN to the Ni(111)s ubstrate in [a] Dr.

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“…However, the high crystalline quality of the prepared samples is accompanied by perturbations in the electronic structure of single layer graphene due to the presence of the substrate, leading to the complete loss of the massless character of carriers around the Fermi energy ( E F ) in some cases. For strongly interacting systems, such as graphene on Ni(111), Rh(111), Ru(0001), an efficient decoupling can be performed by the intercalation of oxygen or other elements, leading to the restoration of the linear energy–momentum dispersion near E F . Even for the substrates considered to show only weak interaction with graphene, such as Ir(111), decoupling schemes based on intercalation are also used to further reduce the influence of the substrate and to produce a nearly free‐standing graphene .…”

Section: Introductionmentioning

confidence: 99%

Layer‐by‐Layer Decoupling of Twisted Graphene Sheets Epitaxially Grown on a Metal Substrate

Simon

Voloshina

Tesch

et al. 2018

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The electronic properties of graphene can be efficiently altered upon interaction with the underlying substrate resulting in a dramatic change of charge carrier behavior. Here, the evolution of the local electronic properties of epitaxial graphene on a metal upon the controlled formation of multilayers, which are produced by intercalation of atomic carbon in graphene/Ir(111), is investigated. Using scanning tunneling microscopy and Landau-level spectroscopy, it is shown that for a monolayer and bilayers with small-angle rotations, Landau levels are fully suppressed, indicating that the metal-graphene interaction is largely confined to the first graphene layer. Bilayers with large twist angles as well as twisted trilayers demonstrate a sequence of pronounced Landau levels characteristic for a free-standing graphene monolayer pointing toward an effective decoupling of the top layer from the metal substrate. These findings give evidence for the controlled preparation of epitaxial graphene multilayers with a different degree of decoupling, which represent an ideal platform for future electronic and spintronic applications.

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Decoupling of graphene from Ni(111) via formation of an interfacial NiO layer

Cited by 38 publications

References 56 publications

Intercalation of O₂ and N₂ in the Graphene/Ni Interfaces of Different Morphologies

Intercalation of O₂ and N₂ in the Graphene/Ni Interfaces of Different Morphologies

Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

Layer‐by‐Layer Decoupling of Twisted Graphene Sheets Epitaxially Grown on a Metal Substrate

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Decoupling of graphene from Ni(111) via formation of an interfacial NiO layer

Cited by 38 publications

References 56 publications

Intercalation of O2 and N2 in the Graphene/Ni Interfaces of Different Morphologies

Intercalation of O2 and N2 in the Graphene/Ni Interfaces of Different Morphologies

Oxygen Functionalization of Hexagonal Boron Nitride on Ni(111)

Layer‐by‐Layer Decoupling of Twisted Graphene Sheets Epitaxially Grown on a Metal Substrate

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Product

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Intercalation of O₂ and N₂ in the Graphene/Ni Interfaces of Different Morphologies

Intercalation of O₂ and N₂ in the Graphene/Ni Interfaces of Different Morphologies