Decoding the structure of interfaces and impurities in 2D materials by photoelectron holography

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Decoding the structure of interfaces and impurities in 2D materials by photoelectron holography. / Usachov, Dmitry Yu. ; Tarasov, Artem V. ; Matsui, Fumihiko; Muntwiler, Matthias; Bokai, Kirill A. ; Shevelev, Viktor O. ; Vilkov, Oleg Yu. ; Kuznetsov, Mikhail V.; Yashina, Lada V.; Laubschat, Clemens; Cossaro, Albano; Floreano, Luca; Verdini, Alberto; Vyalikh, Denis V. .

In: 2D Materials, Vol. 6, No. 4, 045046, 2019.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{fc07852253df4310b7902b923cd61254,

title = "Decoding the structure of interfaces and impurities in 2D materials by photoelectron holography",

abstract = "The properties of atomically thin materials essentially depend on their structures, including impurities, defects and interfaces with underlying substrates. Thus, the detailed structural information is relevant for creation of 2D materials with desired properties. Here, we explore the capabilities of photoelectron diffraction and holography for structural analysis of atomically thin layers using as examples such systems as h-BN, graphene, and modified graphene with boron impurities. We show that for planar 2D crystals with commensurate interface to the substrate, it is possible to visualize the interface and impurities with high spatial resolution, and to distinguish possible non-equivalent structural units. Our approach applied to B-doped graphene on Ni(1 1 1) and Co(0 0 0 1) surfaces has allowed to reveal asymmetry of boron concentrations in the two carbon sublattices and established its dependence on the applied synthesis procedure and chosen substrate. The obtained results suggest that such approach can be widely applied for studies of various 2D systems, where the structures of interfaces and defects are of remarkable importance.",

keywords = "AUGER-ELECTRON, DIFFRACTION, ELECTRON HOLOGRAPHY, HEXAGONAL BORON-NITRIDE, IMAGE RECONSTRUCTION, LOCAL ATOMIC-STRUCTURE, MONOLAYER GRAPHITE, MULTIPLE-SCATTERING, NI(111), SURFACE, doping, graphene, hexagonal boron nitride, photoelectron diffraction, photoelectron holography, structure",

author = "Usachov, {Dmitry Yu.} and Tarasov, {Artem V.} and Fumihiko Matsui and Matthias Muntwiler and Bokai, {Kirill A.} and Shevelev, {Viktor O.} and Vilkov, {Oleg Yu.} and Kuznetsov, {Mikhail V.} and Yashina, {Lada V.} and Clemens Laubschat and Albano Cossaro and Luca Floreano and Alberto Verdini and Vyalikh, {Denis V.}",

year = "2019",

doi = "https://doi.org/10.1088/2053-1583/ab3ea8",

language = "English",

volume = "6",

journal = "2D Materials",

issn = "2053-1583",

publisher = "IOP Publishing Ltd.",

number = "4",

}

RIS

TY - JOUR

T1 - Decoding the structure of interfaces and impurities in 2D materials by photoelectron holography

AU - Usachov, Dmitry Yu.

AU - Tarasov, Artem V.

AU - Matsui, Fumihiko

AU - Muntwiler, Matthias

AU - Bokai, Kirill A.

AU - Shevelev, Viktor O.

AU - Vilkov, Oleg Yu.

AU - Kuznetsov, Mikhail V.

AU - Yashina, Lada V.

AU - Laubschat, Clemens

AU - Cossaro, Albano

AU - Floreano, Luca

AU - Verdini, Alberto

AU - Vyalikh, Denis V.

PY - 2019

Y1 - 2019

N2 - The properties of atomically thin materials essentially depend on their structures, including impurities, defects and interfaces with underlying substrates. Thus, the detailed structural information is relevant for creation of 2D materials with desired properties. Here, we explore the capabilities of photoelectron diffraction and holography for structural analysis of atomically thin layers using as examples such systems as h-BN, graphene, and modified graphene with boron impurities. We show that for planar 2D crystals with commensurate interface to the substrate, it is possible to visualize the interface and impurities with high spatial resolution, and to distinguish possible non-equivalent structural units. Our approach applied to B-doped graphene on Ni(1 1 1) and Co(0 0 0 1) surfaces has allowed to reveal asymmetry of boron concentrations in the two carbon sublattices and established its dependence on the applied synthesis procedure and chosen substrate. The obtained results suggest that such approach can be widely applied for studies of various 2D systems, where the structures of interfaces and defects are of remarkable importance.

AB - The properties of atomically thin materials essentially depend on their structures, including impurities, defects and interfaces with underlying substrates. Thus, the detailed structural information is relevant for creation of 2D materials with desired properties. Here, we explore the capabilities of photoelectron diffraction and holography for structural analysis of atomically thin layers using as examples such systems as h-BN, graphene, and modified graphene with boron impurities. We show that for planar 2D crystals with commensurate interface to the substrate, it is possible to visualize the interface and impurities with high spatial resolution, and to distinguish possible non-equivalent structural units. Our approach applied to B-doped graphene on Ni(1 1 1) and Co(0 0 0 1) surfaces has allowed to reveal asymmetry of boron concentrations in the two carbon sublattices and established its dependence on the applied synthesis procedure and chosen substrate. The obtained results suggest that such approach can be widely applied for studies of various 2D systems, where the structures of interfaces and defects are of remarkable importance.

KW - AUGER-ELECTRON

KW - DIFFRACTION

KW - ELECTRON HOLOGRAPHY

KW - HEXAGONAL BORON-NITRIDE

KW - IMAGE RECONSTRUCTION

KW - LOCAL ATOMIC-STRUCTURE

KW - MONOLAYER GRAPHITE

KW - MULTIPLE-SCATTERING

KW - NI(111)

KW - SURFACE

KW - doping

KW - graphene

KW - hexagonal boron nitride

KW - photoelectron diffraction

KW - photoelectron holography

KW - structure

U2 - https://doi.org/10.1088/2053-1583/ab3ea8

DO - https://doi.org/10.1088/2053-1583/ab3ea8

M3 - Article

VL - 6

JO - 2D Materials

JF - 2D Materials

SN - 2053-1583

IS - 4

M1 - 045046

ER -

ID: 49271850