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The Role of Charge-...
The Role of Charge-Charge Correlations and Covalent Bonding in the Electronic Structure of Adsorbed C-60 : C-60/A1
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- Schiessling, Joachim (author)
- Uppsala universitet,Yt- och gränsskiktsvetenskap
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- Grigoriev, Anton (author)
- Uppsala universitet,Institutionen för fysik och materialvetenskap
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Stener, Mauro (author)
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- Kjeldgaard, Lisbeth (author)
- Uppsala universitet,Yt- och gränsskiktsvetenskap
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- Thiagarajan, Balasubramanian (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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Decleva, Piero (author)
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- Ahuja, Rajeev (author)
- KTH,Tillämpad materialfysik
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- Nordgren, Joseph (author)
- Uppsala universitet,Mjukröntgenfysik
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- Bruhwiler, Paul A. (author)
- Uppsala universitet,Yt- och gränsskiktsvetenskap
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(creator_code:org_t)
- 2010-10-08
- 2010
- English.
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In: The Journal of Physical Chemistry C. - : American Chemical Society (ACS). - 1932-7447 .- 1932-7455. ; 114:43, s. 18686-18692
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Abstract
Subject headings
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- Aromatic molecules are central components of model systems for molecular electronics, with C-60 one of the most studied. Upon adsorption on (metallic) substrates a splitting of the frontier orbitals is commonly observed, with a strong dependence on substrate material, but little dependence on substrate structure. We report the detailed photoelectron angle dependence of C-60/A1(110) over a wide range of energy, finding a strong remnant molecular character. In particular, certain HOMO-derived suborbitals couple strongly, and others weakly, with the metal, which results in final state charging for those weakly coupled. C Is data correlate well with the assignments made on this basis, as does the comparison of ground state partial densities-of-states (PDOS) to photoelectron spectra. Detailed analysis of the PDOS supports a rough division into surface-near and surface-far components, in agreement with the molecular picture. The component spectral widths are attributed to intramolecular vibrational coupling, which is suggested to aid in the electronic decoupling of certain suborbitals from the substrate, facilitating the observed final state charging.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Material physics with surface physics
- Materialfysik med ytfysik
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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