%0 Journal Article
%T Hybridized electronic states in potassium-doped picene probed by soft x-ray spectroscopies
%A Hiroyuki Yamane
%A Nobuhiro Kosugi
%J AIP Advances
%D 2012
%I AIP Publishing LLC
%R 10.1063/1.4760232
%X The electronic structure of the unoccupied and occupied states of potassium (K)-doped and undoped picene crystalline films has been investigated by using the element-selective and bulk-sensitive photon-detection methods of X-ray absorption and emission spectroscopies. We observed the formation of the doping-induced unoccupied and occupied electronic states in K-doped picene. By applying the inner-shell resonant-excitation experiments, we observed the evidence for the orbital hybridization between K and picene near the Fermi energy. Furthermore, the resonant X-ray emission experiment suggests the presence of the Raman-active vibronic interaction in K-doped picene. These experimental evidences play a crucial role in the superconductivity of K-doped picene.
%U http://link.aip.org/link/doi/10.1063/1.4760232