Proving weak electronic interaction between molecules and substrate: a study of pentacene monolayer on graphite
Abstract
The impact of van der Waals interaction on the electronic structure between a pentacene monolayer and a graphite surface was investigated. Upon cooling the monolayer, newly formed dispersive bands, showing the constant final state nature overlapping with the non-dispersive, discrete molecular orbital state, is observed by low-energy angle-resolved photoelectron spectroscopy. The dispersive band consists of positive and negative intensities depending on the final state energy, indicating Fano resonance involving a discrete molecular state that couples a continuum state upon photoionization. A wave-function overlap is demonstrated according to their larger spread in unoccupied states even at the weakly bounded interface by Fano spectral analysis.
Cite
@article{arxiv.2304.14734,
title = {Proving weak electronic interaction between molecules and substrate: a study of pentacene monolayer on graphite},
author = {Yuri Hasegawa and Takuma Yamaguchi and Matthias Meissner and Takahiro Ueba and Fabio Bossolotti and Shin-ichiro Ideta and Kiyohisa Tanaka and Susumu Yanagisawa and Satoshi Kera},
journal= {arXiv preprint arXiv:2304.14734},
year = {2023}
}