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Author Park, Cheol-Hwan ♦ Giustino, Feliciano ♦ Spataru, Catalin D. ♦ Cohen, Marvin L. ♦ Louie, Steven G.
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2010-01-15
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics
Subject Keyword Condensed Matter - Materials Science ♦ physics:cond-mat
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.
Description Reference: Nano Lett. 9, 4234-4239 (2009)
Educational Use Research
Learning Resource Type Article


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