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Résumé |
The evolution of the electronic structure from single layer graphene [1,2] to infinite layer graphite [3,4,5] is studied by using high resolution angle resolved photoemission spectroscopy (ARPES). The dynamics of the Dirac quasiparticles, the presence of electron and hole charge carriers and the existence of a gap in the excitation spectra are studied as a function of momentum, photon energy and layer thickness. A detailed analysis of the dispersion and the scattering rate will also be presented and discussed in terms of coupling of electrons to phonons.
References:
[1] S.Y. Zhou et al, in preparation
[2] E. Rollings, G.-H. Gweon, S.Y. Zhou et al, Cond-mat 0512226; to be
published in J. Phys. Chem. Solids (2006)
[3] S.Y. Zhou et al, Phys. Rev. B 71, 161403 (R) (2005)
[4] S.Y. Zhou et al, Annals of Physics 321, 1730 (2006)
[5] S.Y. Zhou et al, Nature Physics 2, 595 (2006) |
