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arXiv · 1811.10098

Electronic Structure of an Iron-Porphyrin Derivative on Au(111)

Arnulf Stein·Daniela Rolf·Christian Lotze·Constantin Czekelius·Katharina J. Franke·Petra Tegeder
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Abstract

Surface-bound porphyrins are promising candidates for molecular switches, electronics and spintronics. Here, we studied the structural and the electronic properties of Fe-tetra-pyridil-porphyrin adsorbed on Au(111) in the monolayer regime. We combined scanning tunneling microscopy/spectroscopy, ultraviolet photoemission, and two-photon photoemission to determine the energy levels of the frontier molecular orbitals. We also resolved an excitonic state with a binding energy of 420 meV, which allowed us to compare the electronic transport gap with the optical gap.

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Arnulf Stein, Daniela Rolf, Christian Lotze, Constantin Czekelius, Katharina J. Franke, Petra Tegeder. 2018-11-25. Electronic Structure of an Iron-Porphyrin Derivative on Au(111). https://doi.org/10.1088/1361-648x/aaf296

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