Benzene/Si(100): metastable chemisorption and binding state conversion

Scanning tunneling microscopy (STM) has been used to investigate the adsorption of benzene on the Si(100)(2×1) surface. At room temperature two types of bonding configurations are observed; on-top of a single Si dimer and bridging two dimers. Upon dosing the single dimer state is populated preferent...

Full description

Saved in:
Bibliographic Details
Published in:Chemical physics letters 1998-01, Vol.282 (3), p.305-312
Main Authors: Lopinski, G.P, Moffatt, D.J, Wolkow, R.A
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Scanning tunneling microscopy (STM) has been used to investigate the adsorption of benzene on the Si(100)(2×1) surface. At room temperature two types of bonding configurations are observed; on-top of a single Si dimer and bridging two dimers. Upon dosing the single dimer state is populated preferentially but is seen to be metastable with respect to the bridging configuration, in agreement with semi-empirical quantum cluster calculations. The single dimer to bridge conversion is activated, with a barrier of 0.95 eV. The single dimer state can be re-populated via a process assisted by the STM tip.
ISSN:0009-2614
1873-4448
DOI:10.1016/S0009-2614(97)01317-1