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Title

Anomalous quasiparticle lifetime in graphite: Band structure effects

AuthorsSpataru, Catalin D.; Cazalilla, M. A. ; Rubio, Angel ; Benedict, Lorin X.; Echenique, Pedro M. ; Louie, Steven G.
Issue Date2001
PublisherAmerican Physical Society
CitationPhysical Review Letters 87(24): 246405 (2001)
AbstractWe report ab initio calculations of quasiparticle lifetimes in graphite, as determined from the imaginary part of the self-energy operator within the GW approximation. The inverse lifetime in the energy range from 0.5 to 3.5 eV above the Fermi level presents significant deviations from the quadratic behavior naively expected from Fermi liquid theory. The deviations are explained in terms of the unique features of the band structure of this material. We also discuss the experimental results from different groups and make some predictions for future experiments.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.87.246405
URIhttp://hdl.handle.net/10261/98693
DOI10.1103/PhysRevLett.87.246405
Identifiersdoi: 10.1103/PhysRevLett.87.246405
issn: 0031-9007
e-issn: 1079-7114
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