Angle-resolved secondary photoelectron emission from graphene interfaces

Oleg Yu Vilkov, Eugene E. Krasovskii, Alexander V. Fedorov, Artem G. Rybkin, Alexander M. Shikin, Clemens Laubschat, Jorge Budagosky, Denis V. Vyalikh, Dmitry Yu Usachov

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Angle-resolved secondary electron emission spectra were analyzed for studying the electron transmission properties of graphene when it is tightly bound to a metallic substrate and when it is decoupled from the latter. As respective model systems, graphene/Ni(111) and graphene/Au/Ni(111) were considered. We discovered two types of spectral structures linked with the transmission properties of graphene: bands related to scattering resonances and to umklapp reflection. These findings are interpreted based on an ab initio theory of the scattering of the outgoing electrons by the graphene overlayers. The experimental secondary electron emission maps are in good agreement with the calculations, indicating that such approach can be successfully applied for studying the electron transmission properties of a variety of two-dimensional materials.

Original languageEnglish
Article number195421
Number of pages10
JournalPhysical Review B
Volume99
Issue number19
DOIs
StatePublished - 13 May 2019

Keywords

  • ENERGY-ELECTRON-DIFFRACTION
  • CONDUCTION-BAND STRUCTURE
  • HIGH-RESOLUTION
  • PHOTOEMISSION
  • GRAPHITE
  • SPECTROSCOPY
  • RESONANCES
  • SCATTERING

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

@article{9f85753342ef407581dc17705d4751c9,
title = "Angle-resolved secondary photoelectron emission from graphene interfaces",
abstract = "Angle-resolved secondary electron emission spectra were analyzed for studying the electron transmission properties of graphene when it is tightly bound to a metallic substrate and when it is decoupled from the latter. As respective model systems, graphene/Ni(111) and graphene/Au/Ni(111) were considered. We discovered two types of spectral structures linked with the transmission properties of graphene: bands related to scattering resonances and to umklapp reflection. These findings are interpreted based on an ab initio theory of the scattering of the outgoing electrons by the graphene overlayers. The experimental secondary electron emission maps are in good agreement with the calculations, indicating that such approach can be successfully applied for studying the electron transmission properties of a variety of two-dimensional materials.",
keywords = "ENERGY-ELECTRON-DIFFRACTION, CONDUCTION-BAND STRUCTURE, HIGH-RESOLUTION, PHOTOEMISSION, GRAPHITE, SPECTROSCOPY, RESONANCES, SCATTERING",
author = "Vilkov, {Oleg Yu} and Krasovskii, {Eugene E.} and Fedorov, {Alexander V.} and Rybkin, {Artem G.} and Shikin, {Alexander M.} and Clemens Laubschat and Jorge Budagosky and Vyalikh, {Denis V.} and Usachov, {Dmitry Yu}",
year = "2019",
month = "5",
day = "13",
doi = "10.1103/PhysRevB.99.195421",
language = "English",
volume = "99",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "19",

}

Angle-resolved secondary photoelectron emission from graphene interfaces. / Vilkov, Oleg Yu; Krasovskii, Eugene E.; Fedorov, Alexander V.; Rybkin, Artem G.; Shikin, Alexander M.; Laubschat, Clemens; Budagosky, Jorge; Vyalikh, Denis V.; Usachov, Dmitry Yu.

In: Physical Review B, Vol. 99, No. 19, 195421, 13.05.2019.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Angle-resolved secondary photoelectron emission from graphene interfaces

AU - Vilkov, Oleg Yu

AU - Krasovskii, Eugene E.

AU - Fedorov, Alexander V.

AU - Rybkin, Artem G.

AU - Shikin, Alexander M.

AU - Laubschat, Clemens

AU - Budagosky, Jorge

AU - Vyalikh, Denis V.

AU - Usachov, Dmitry Yu

PY - 2019/5/13

Y1 - 2019/5/13

N2 - Angle-resolved secondary electron emission spectra were analyzed for studying the electron transmission properties of graphene when it is tightly bound to a metallic substrate and when it is decoupled from the latter. As respective model systems, graphene/Ni(111) and graphene/Au/Ni(111) were considered. We discovered two types of spectral structures linked with the transmission properties of graphene: bands related to scattering resonances and to umklapp reflection. These findings are interpreted based on an ab initio theory of the scattering of the outgoing electrons by the graphene overlayers. The experimental secondary electron emission maps are in good agreement with the calculations, indicating that such approach can be successfully applied for studying the electron transmission properties of a variety of two-dimensional materials.

AB - Angle-resolved secondary electron emission spectra were analyzed for studying the electron transmission properties of graphene when it is tightly bound to a metallic substrate and when it is decoupled from the latter. As respective model systems, graphene/Ni(111) and graphene/Au/Ni(111) were considered. We discovered two types of spectral structures linked with the transmission properties of graphene: bands related to scattering resonances and to umklapp reflection. These findings are interpreted based on an ab initio theory of the scattering of the outgoing electrons by the graphene overlayers. The experimental secondary electron emission maps are in good agreement with the calculations, indicating that such approach can be successfully applied for studying the electron transmission properties of a variety of two-dimensional materials.

KW - ENERGY-ELECTRON-DIFFRACTION

KW - CONDUCTION-BAND STRUCTURE

KW - HIGH-RESOLUTION

KW - PHOTOEMISSION

KW - GRAPHITE

KW - SPECTROSCOPY

KW - RESONANCES

KW - SCATTERING

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U2 - 10.1103/PhysRevB.99.195421

DO - 10.1103/PhysRevB.99.195421

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