X-ray edge problem of graphene

Sung Ryul Yang, Hyun C. Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)


The x-ray edge problem of graphene with the Dirac fermion spectrum is studied. At half-filling the linear density of states suppresses the singular response of the Fermi liquid, while away from half-filling the singular features of the Fermi liquid reappear. The crossover behavior as a function of the Fermi energy is examined in detail. The exponent of the power-law absorption rate depends both on the intra- and intervalley scattering, and it changes as a function of the Fermi energy, which may be tested experimentally.

Original languageEnglish
Article number245411
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
Publication statusPublished - 2007 Dec 11

ASJC Scopus subject areas

  • Condensed Matter Physics

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