Bulk electronic structure of K3C60 as revealed by soft x-rays

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title = "Bulk electronic structure of K3C60 as revealed by soft x-rays",
abstract = "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 C60 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 C60 also in the conduction band. The symmetry selectivity is as pronounced in K3C60 as in pure C60, indicating that the local C60 symmetry is not appreciably affected by the K doping, either in the ground state or intermediate state, on the time scale of 6 fs.",
author = "Tanel K{\"a}{\"a}mbre and Joachim Schiessling and Lisbeth Kjeldgaard and Limin Qian and Ingrid Marenne and O'Shea, {James N.} and Joachim Schnadt and Dennis Nordlund and Glover, {Chris J.} and Jan-Erik Rubensson and Petra Rudolf and Nils M{\aa}rtensson and Joseph Nordgren and Br{\"u}hwiler, {Paul A.}",
year = "2007",
doi = "10.1103/PhysRevB.75.195432",
language = "English",
volume = "75",
journal = "Physical Review B - Condensed Matter and Materials Physics",
issn = "1550-235X",
publisher = "American Physical Society",
number = "19",