Jahn-Teller effects and surface interactions in multiply-charged fullerene anions and the effect on scanning tunneling microscopy images

Dunn, Janette L. and Alqannas, Haifa S. and Lakin, Andrew J. (2015) Jahn-Teller effects and surface interactions in multiply-charged fullerene anions and the effect on scanning tunneling microscopy images. Chemical Physics . ISSN 0301-0104 (In Press)

[img] PDF - Repository staff only until 27 May 2017. - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Available under Licence Creative Commons Attribution Non-commercial No Derivatives.
Download (9MB)

Abstract

We investigate the combined effects of Jahn-Teller (JT) coupling and interactions with a surface substrate on fullerene anions C$_{60}^{2-}$ to C$_{60}^{4-}$. JT coupling alone causes the C$_{60}$ ions to instantaneously distort from the icosahedral symmetry of the neutral molecule to a lower symmetry, with the molecule moving dynamically between a set of equivalent distortions. When adsorbed on a surface, the number of equivalent minimum-energy distortions is reduced. The implications of this on observed scanning tunneling microscopy (STM) images will be discussed, and comparisons made with existing experimental data. We show that a consistent interpretation of the images from all of the charge states of C$_{60}$ can only be obtained using a JT model in which the symmetry is further reduced by surface interactions. The comparison with experimental data also allows us to determine relationships between the quadratic Jahn-Teller coupling and surface interaction parameters.

Item Type: Article
Keywords: Jahn-Teller, Fullerene, Fulleride, STM
Schools/Departments: University of Nottingham UK Campus > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1016/j.chemphys.2015.05.016
Depositing User: Dunn, Dr Janette L
Date Deposited: 15 Jul 2015 12:02
Last Modified: 14 Sep 2016 08:23
URI: http://eprints.nottingham.ac.uk/id/eprint/29313

Actions (Archive Staff Only)

Edit View Edit View