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Electron-phonon coupling in potassium-doped graphene: Angle-resolved photoemission spectroscopy

Authors :
Bianchi, M.
Rienks, E. D. L.
Lizzit, S.
Baraldi, A.
Balog, R.
Hornekaer, L.
Hofmann, Ph.
Source :
Phys. Rev. B 81, 041403(R) (2010)
Publication Year :
2009

Abstract

The electron-phonon coupling in potassium-doped graphene on Ir(111) is studied via the renormalization of the pi* band near the Fermi level, using angle-resolved photoemission spectroscopy. The renormalization is found to be fairly weak and almost isotropic, with a mass enhancement parameter of lambda= 0.28(6) for both the K-M and the K-G direction. These results are found to agree well with recent first principles calculations.<br />Comment: 5 pages, 3 figures

Details

Database :
arXiv
Journal :
Phys. Rev. B 81, 041403(R) (2010)
Publication Type :
Report
Accession number :
edsarx.0910.4126
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.81.041403