Angle-resolved photoemission spectra of graphene from first-principles calculations
Abstract
Angle-resolved photoemission spectroscopy (ARPES) is a powerful experimental technique for directly probing electron dynamics in solids. The energy vs. momentum dispersion relations and the associated spectral broadenings measured by ARPES provide a wealth of information on quantum many-body interaction effects. In particular, ARPES allows studies of the Coulomb interaction among electrons (electron-electron interactions) and the interaction between electrons and lattice vibrations (electron-phonon interactions). Here, we report ab initio simulations of the ARPES spectra of graphene including both electron-electron and electron-phonon interactions on the same footing. Our calculations reproduce some of the key experimental observations related to many-body effects, including the indication of a mismatch between the upper and lower halves of the Dirac cone.
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Cite
@article{arxiv.1001.2803,
title = {Angle-resolved photoemission spectra of graphene from first-principles calculations},
author = {Cheol-Hwan Park and Feliciano Giustino and Catalin D. Spataru and Marvin L. Cohen and Steven G. Louie},
journal= {arXiv preprint arXiv:1001.2803},
year = {2010}
}