Bisti, F., Priante, F., Fedorov, A., V, Donarelli, M., Fantasia, M., Petaccia, L., Frank, O., Kalbac, M., Profeta, G., Gruneis, A. and Ottaviano, L. (2021). Electron-phonon coupling origin of the graphene pi*-band kink via isotope effect. Phys. Rev. B, 103 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

The pi*-band renormalization of Li-doped quasifreestanding graphene has been investigated by means of isotope (C-13) substitution and angle-resolved photoemission spectroscopy. The well documented sudden slope change (known as kink) located at 169 meV from the Fermi level in the graphene made of C-12 atoms shifts to 162 meV once the carbon monolayer is composed by C-13 isotope. Such an energy shift is in excellent agreement with the expected softening of the phonon energy distribution due to the isotope substitution and provides, therefore, an indisputable experimental proof of the electron-phonon coupling origin of this well known many-body feature in the electronic structure of graphene.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bisti, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Priante, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fedorov, A., VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Donarelli, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fantasia, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petaccia, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Frank, O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kalbac, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Profeta, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gruneis, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ottaviano, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-599238
DOI: 10.1103/PhysRevB.103.035119
Journal or Publication Title: Phys. Rev. B
Volume: 103
Number: 3
Date: 2021
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
BILAYER GRAPHENE; SUPERCONDUCTIVITYMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59923

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