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Søren Ulstrup

Electron-phonon coupling in quasi free-standing graphene

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Electron-phonon coupling in quasi free-standing graphene. / Christian Johannsen, Jens; Ulstrup, Søren; Bianchi, Marco; Hatch, Richard; Guan, Dandan; Mazzola, Federico; Hornekær, Liv; Fromm, Felix; Raidel, Christian; Seyller, Thomas; Hofmann, Philip.

In: Journal of Physics: Condensed Matter, Vol. 25, 12.02.2013, p. 094001.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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Christian Johannsen, J, Ulstrup, S, Bianchi, M, Hatch, R, Guan, D, Mazzola, F, Hornekær, L, Fromm, F, Raidel, C, Seyller, T & Hofmann, P 2013, 'Electron-phonon coupling in quasi free-standing graphene', Journal of Physics: Condensed Matter, vol. 25, pp. 094001. https://doi.org/10.1088/0953-8984/25/9/094001

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Author

Christian Johannsen, Jens ; Ulstrup, Søren ; Bianchi, Marco ; Hatch, Richard ; Guan, Dandan ; Mazzola, Federico ; Hornekær, Liv ; Fromm, Felix ; Raidel, Christian ; Seyller, Thomas ; Hofmann, Philip. / Electron-phonon coupling in quasi free-standing graphene. In: Journal of Physics: Condensed Matter. 2013 ; Vol. 25. pp. 094001.

Bibtex

@article{788fe4986fb041a4bb523a44105bac29,
title = "Electron-phonon coupling in quasi free-standing graphene",
abstract = "Quasi free-standing monolayer graphene can be produced by intercalating species like oxygen or hydrogen between epitaxial graphene and the substrate crystal. If the graphene is indeed decoupled from the substrate, one would expect the observation of a similar electronic dispersion and many-body effects, irrespective of the substrate and the material used to achieve the decoupling. Here we investigate the electron-phonon coupling in two different types of quasi free-standing monolayer graphene: decoupled from SiC via hydrogen intercalation and decoupled from Ir via oxygen intercalation. Both systems show a similar overall behaviour of the self-energy and a weak renormalization of the bands near the Fermi energy. The electron-phonon coupling is found to be sufficiently weak to make the precise determination of the coupling constant lambda through renormalization difficult. The estimated value of lambda is 0.05(3) for both systems.",
keywords = "cond-mat.str-el, cond-mat.mtrl-sci",
author = "{Christian Johannsen}, Jens and S{\o}ren Ulstrup and Marco Bianchi and Richard Hatch and Dandan Guan and Federico Mazzola and Liv Hornek{\ae}r and Felix Fromm and Christian Raidel and Thomas Seyller and Philip Hofmann",
year = "2013",
month = feb,
day = "12",
doi = "10.1088/0953-8984/25/9/094001",
language = "English",
volume = "25",
pages = "094001",
journal = "Journal of Physics: Condensed Matter",
issn = "0953-8984",
publisher = "Institute of Physics Publishing Ltd.",

}

RIS

TY - JOUR

T1 - Electron-phonon coupling in quasi free-standing graphene

AU - Christian Johannsen, Jens

AU - Ulstrup, Søren

AU - Bianchi, Marco

AU - Hatch, Richard

AU - Guan, Dandan

AU - Mazzola, Federico

AU - Hornekær, Liv

AU - Fromm, Felix

AU - Raidel, Christian

AU - Seyller, Thomas

AU - Hofmann, Philip

PY - 2013/2/12

Y1 - 2013/2/12

N2 - Quasi free-standing monolayer graphene can be produced by intercalating species like oxygen or hydrogen between epitaxial graphene and the substrate crystal. If the graphene is indeed decoupled from the substrate, one would expect the observation of a similar electronic dispersion and many-body effects, irrespective of the substrate and the material used to achieve the decoupling. Here we investigate the electron-phonon coupling in two different types of quasi free-standing monolayer graphene: decoupled from SiC via hydrogen intercalation and decoupled from Ir via oxygen intercalation. Both systems show a similar overall behaviour of the self-energy and a weak renormalization of the bands near the Fermi energy. The electron-phonon coupling is found to be sufficiently weak to make the precise determination of the coupling constant lambda through renormalization difficult. The estimated value of lambda is 0.05(3) for both systems.

AB - Quasi free-standing monolayer graphene can be produced by intercalating species like oxygen or hydrogen between epitaxial graphene and the substrate crystal. If the graphene is indeed decoupled from the substrate, one would expect the observation of a similar electronic dispersion and many-body effects, irrespective of the substrate and the material used to achieve the decoupling. Here we investigate the electron-phonon coupling in two different types of quasi free-standing monolayer graphene: decoupled from SiC via hydrogen intercalation and decoupled from Ir via oxygen intercalation. Both systems show a similar overall behaviour of the self-energy and a weak renormalization of the bands near the Fermi energy. The electron-phonon coupling is found to be sufficiently weak to make the precise determination of the coupling constant lambda through renormalization difficult. The estimated value of lambda is 0.05(3) for both systems.

KW - cond-mat.str-el

KW - cond-mat.mtrl-sci

U2 - 10.1088/0953-8984/25/9/094001

DO - 10.1088/0953-8984/25/9/094001

M3 - Journal article

C2 - 23399941

VL - 25

SP - 094001

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

ER -