On the X-Ray Edge Problem in Graphene

Eugene Kogan, Moshe Kaveh

Research output: Contribution to journalArticlepeer-review


We calculate the core-hole spectral density in a pristine graphene, where the
density of states of itinerant electrons goes linearly to zero at the Fermi level.
We consider explicitly two models of electron-hole interaction. In the unscreened Coulomb interaction model, the spectral density is similar to that in
metal (for local interaction). Thus there is no δ-function singularity in the
core-hole spectral density. In the local interaction model, the δ-function singularity survives, but the interaction leads to the appearance of the background in the spectral density
Original languageEnglish
Pages (from-to)1-7
Number of pages7
StatePublished - 30 Jan 2018


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