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Träfflista för sökning "WFRF:(Noffsinger J.) "

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  • Hwang, Choongyu, et al. (author)
  • Ytterbium-driven strong enhancement of electron-phonon coupling in graphene
  • 2014
  • In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 90:11, s. 115417-
  • Journal article (peer-reviewed)abstract
    • We present a high-resolution angle-resolved photoemission spectroscopy study in conjunction with first-principles calculations to investigate how the interaction of electrons with phonons in graphene is modified by the presence of Yb. We find that the charges transferred from Yb to the graphene layer hybridize with the graphene pi bands, leading to a strong enhancement of the electron-phonon interaction. Specifically, the electron-phonon coupling constant is increased by as much as a factor of 10 upon the introduction of Yb with respect to as-grown graphene (<= 0.05). The observed coupling constant constitutes the highest value ever measured for graphene and suggests that the hybridization between graphene and the adatoms might be a critical parameter in realizing superconducting graphene.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Johansson, Börje (1)
Siegel, D. A. (1)
Cohen, Marvin L. (1)
Neaton, J. B. (1)
Fedorov, A. V. (1)
Hwang, Choongyu (1)
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Kim, Duck Young (1)
Chan, Kevin T. (1)
Noffsinger, J. (1)
Lanzara, A. (1)
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University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2014 (1)

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