Electrically-driven vibronic spectroscopy with sub-molecular resolution
Mesoscale and Nanoscale Physics
2017-03-29 v1
Abstract
A scanning tunneling microscope is used to generate the electroluminescence of phthalocyanine molecules deposited on NaCl/Ag(111). Photon spectra reveal an intense emission line at 1.9 eV that corresponds to the fluorescence of the molecules, and a series of weaker red-shifted lines. Based on a comparison with Raman spectra acquired on macroscopic molecular crystals, these spectroscopic features can be associated to the vibrational modes of the molecules and provide a detailed chemical fingerprint of the probed species. Maps of the vibronic features reveal sub- molecularly-resolved structures whose patterns are related to the symmetry of the probed vibrational modes.
Cite
@article{arxiv.1612.04653,
title = {Electrically-driven vibronic spectroscopy with sub-molecular resolution},
author = {Benjamin Doppagne and Michael C. Chong and Etienne Lorchat and Stéphane Berciaud and Michelangelo Romeo and Hervé Bulou and Alex Boeglin and Fabrice Scheurer and Guillaume Schull},
journal= {arXiv preprint arXiv:1612.04653},
year = {2017}
}