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Bulk electronic structure of K3C60 as revealed by soft x-rays
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics II.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics V.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics, Physics II.
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2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 19, 195432- p.Article in journal (Refereed) Published
Abstract [en]

We present C 1s x- ray absorption, x- ray emission, and resonant inelastic x- ray scattering (RIXS ) spectra of single- phase crystalline K3C60. The comparison to valence- band photoelectron spectra from the same sample facilitates identification of the contribution from surface and bulk electronic states in the latter. Bulk- sensitive techniques show that the valence bands of K3C60 and pure C-60 are characterized by spectral features of similar width, in agreement with the predictions of band- structure calculations. Symmetry selectivity in the RIXS process allows us to assign peaks in the C 1s absorption spectrum, demonstrating a close correspondence with pure C-60 also in the conduction band. The symmetry selectivity is as pronounced in K3C60 as in pure C-60, indicating that the local C-60 symmetry is not appreciably affected by the K doping, either in the ground state or intermediate state, on the time scale of 6 fs.

Place, publisher, year, edition, pages
2007. Vol. 75, no 19, 195432- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-11582DOI: 10.1103/PhysRevB.75.195432ISI: 000246890800157OAI: oai:DiVA.org:uu-11582DiVA: diva2:39351
Available from: 2008-06-10 Created: 2008-06-10 Last updated: 2017-12-11

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Rubensson, Jan-ErikMårtensson, NilsNordgren, JosephBrühwiler, Paul A.

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