Abstract
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
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 language | English |
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Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | Graphene |
Volume | 7 |
DOIs | |
State | Published - 30 Jan 2018 |