C-60 submonolayers on the Si(111)-(7 x 7) surface: Does a mixture of physisorbed and chemisorbed states exist?
(2009) In Surface Science 603(18). p.2896-2901- Abstract
- We have carried out a combined X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy(UPS), and scanning tunnelling microscopy (STM) study of the C-60-Si(1 1 1) interaction where the XPS/UPS spectrometer and STM are integrated on a single UHV system. This enables a direct comparison of the XPS/UPS spectra with the STM data and eliminates any uncertainty in C-60 coverage measurements. X-ray standing wave measurements and density functional theory calculations have been used to support and interpret the results of the XPS/UPS/STM experiments. Our data conclusively rule out models of C-60 adsorption which involve a mixture of physisorbed and chemisorbed molecules [K. Sakamoto, et al., Phys. Rev. B 60 (1999) 2579].... (More)
- We have carried out a combined X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy(UPS), and scanning tunnelling microscopy (STM) study of the C-60-Si(1 1 1) interaction where the XPS/UPS spectrometer and STM are integrated on a single UHV system. This enables a direct comparison of the XPS/UPS spectra with the STM data and eliminates any uncertainty in C-60 coverage measurements. X-ray standing wave measurements and density functional theory calculations have been used to support and interpret the results of the XPS/UPS/STM experiments. Our data conclusively rule out models of C-60 adsorption which involve a mixture of physisorbed and chemisorbed molecules [K. Sakamoto, et al., Phys. Rev. B 60 (1999) 2579]. Instead, we find that all molecules, up to 1 monolayer coverage, bond to the surface via Si-C bonds which are predominantly of covalent character. (C) 2009 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1507197
- author
- Gangopadhyay, S. ; Woolley, R. A. J. ; Danza, R. ; Phillips, M. A. ; Schulte, Karina LU ; Wang, Li ; Dhanak, V. R. and Moriarty, P. J.
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Scanning tunnelling microscopy, Interface, Silicon, C-60, Adsorption
- in
- Surface Science
- volume
- 603
- issue
- 18
- pages
- 2896 - 2901
- publisher
- Elsevier
- external identifiers
-
- wos:000270640700011
- scopus:69949161264
- ISSN
- 0039-6028
- DOI
- 10.1016/j.susc.2009.07.043
- language
- English
- LU publication?
- yes
- id
- f8da0616-c12a-4b5f-a81f-dfcab39d17d7 (old id 1507197)
- date added to LUP
- 2016-04-01 13:05:53
- date last changed
- 2022-02-26 19:17:34
@article{f8da0616-c12a-4b5f-a81f-dfcab39d17d7, abstract = {{We have carried out a combined X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy(UPS), and scanning tunnelling microscopy (STM) study of the C-60-Si(1 1 1) interaction where the XPS/UPS spectrometer and STM are integrated on a single UHV system. This enables a direct comparison of the XPS/UPS spectra with the STM data and eliminates any uncertainty in C-60 coverage measurements. X-ray standing wave measurements and density functional theory calculations have been used to support and interpret the results of the XPS/UPS/STM experiments. Our data conclusively rule out models of C-60 adsorption which involve a mixture of physisorbed and chemisorbed molecules [K. Sakamoto, et al., Phys. Rev. B 60 (1999) 2579]. Instead, we find that all molecules, up to 1 monolayer coverage, bond to the surface via Si-C bonds which are predominantly of covalent character. (C) 2009 Elsevier B.V. All rights reserved.}}, author = {{Gangopadhyay, S. and Woolley, R. A. J. and Danza, R. and Phillips, M. A. and Schulte, Karina and Wang, Li and Dhanak, V. R. and Moriarty, P. J.}}, issn = {{0039-6028}}, keywords = {{Scanning tunnelling microscopy; Interface; Silicon; C-60; Adsorption}}, language = {{eng}}, number = {{18}}, pages = {{2896--2901}}, publisher = {{Elsevier}}, series = {{Surface Science}}, title = {{C-60 submonolayers on the Si(111)-(7 x 7) surface: Does a mixture of physisorbed and chemisorbed states exist?}}, url = {{http://dx.doi.org/10.1016/j.susc.2009.07.043}}, doi = {{10.1016/j.susc.2009.07.043}}, volume = {{603}}, year = {{2009}}, }