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arXiv · 1208.2101

Hybridized electronic states in potassium-doped picene probed by soft x-ray spectroscopies

Hiroyuki Yamane·Nobuhiro Kosugi
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Abstract

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.

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Hiroyuki Yamane, Nobuhiro Kosugi. 2012-10-15. Hybridized electronic states in potassium-doped picene probed by soft x-ray spectroscopies. https://doi.org/10.1063/1.4760232

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