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Core-level spectra from graphene
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-6281-868X
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 91, no 4, 045402- p.Article in journal (Refereed) Published
Abstract [en]

We calculate core-level spectra for pristine and doped free-standing graphene sheets. Instructions for how to perform the calculations are given in detail. Although pristine graphene is not metallic the core-level spectrum presents low-energy tailing which is characteristic of metallic systems. The peak shapes vary with doping level in a characteristic way. The spectra are compared to experiments and show good agreement. We compare to two different pristine samples and to one doped sample. The pristine samples are one with quasi-free-standing epitaxial graphene on SiC obtained by hydrogen intercalation and one with a suspended graphene sheet. The doped sample is a gold supported graphene sheet. The gold substrate acts as an acceptor so the graphene sheet gets p doped.

Place, publisher, year, edition, pages
American Physical Society , 2015. Vol. 91, no 4, 045402- p.
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-114240DOI: 10.1103/PhysRevB.91.045402ISI: 000347921700007OAI: diva2:788717
Available from: 2015-02-16 Created: 2015-02-16 Last updated: 2015-02-25

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Sernelius, Bo
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