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arXiv · 1302.1476

Core hole-electron correlation in coherently coupled molecules

M. Scholz·F. Holch·C. Sauer·M. Wiessner·A. Schöll·F. Reinert
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Abstract

We study the core hole-electron correlation in coherently coupled molecules by energy dispersive near edge X-ray absorption fine-structure spectroscopy. In a transient phase, which exists during the transition between two bulk arrangements, 1,4,5,8-naphthalene-tetracarboxylicacid-dianhydride multilayer films exhibit peculiar changes of the line shape and energy position of the X-ray absorption signal at the C K-edge with respect to the bulk and gas phase spectra. By a comparison to a theoretical model based on a coupling of transition dipoles, which is established for optical absorption, we demonstrate that the observed spectroscopic differences can be explained by an intermolecular delocalized core hole-electron pair. By applying this model we can furthermore quantify the coherence length of the delocalized core-exciton.

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M. Scholz, F. Holch, C. Sauer, M. Wiessner, A. Schöll, F. Reinert. 2013-02-06. Core hole-electron correlation in coherently coupled molecules. https://doi.org/10.1103/physrevlett.111.048102

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