Electronic structure of undoped and potassium doped coronene investigated by electron energy-loss spectroscopy

Friedrich Roth, Johannes Bauer, Benjamin Mahns, Bernd Büchner, Martin Knupfer

备注：: 15 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:1102.3286
发表信息：: Phys. Rev. B 85, 014513 (2012)
DOI：: 10.1103/PhysRevB.85.014513

英文摘要：

We performed electron energy-loss spectroscopy studies in transmission in order to obtain insight into the electronic properties of potassium intercalated coronene, a recently discovered superconductor with a rather high transition temperature of about 15\,K. A comparison of the loss function of undoped and potassium intercalated coronene shows the appearance of several new peaks in the optical gap upon potassium addition. Furthermore, our core level excitation data clearly signal filling of the conduction bands with electrons.

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