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Overlayer resonance...
Overlayer resonance and quantum well state of Cs/Cu(111) studied with angle-resolved photoemission, LEED, and first-principles calculations
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- Breitholtz, Marcus, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Chis, Vasile, 1977 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg
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- Hellsing, Bo, 1952 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),University of Gothenburg
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- Lindgren, Stig-Åke, 1950 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wallden, Lars Erik Gustaf, 1941 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2007
- 2007
- Engelska.
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Ingår i: Physical Review B. - 1098-0121. ; 75:15, s. 9-
- Relaterad länk:
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http://dx.doi.org/10...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Angle-resolved photoemission spectroscopy and low-energy electron diffraction are used to study submonolayer coverages of Cs on Cu(111) at room temperature (RT) and 170 K. At RT, the Cs saturation coverage is approximately 90% of the full monolayer coverage. The full monolayer is characterized by a quantum well state (QWS) band having an energy of 25 meV below the Fermi level (E-F) in the (Gamma) over bar point and a resonance band extending to energies below the Cu band gap. This is supported by our first-principles calculations. Low-energy electron diffraction shows that the Cs overalyer forms a (2x2) structure over a wide coverage range, in which the QWS has energies from 50 meV above to 25 meV below E-F. The continued energy shift of the QWS after saturation of the diffraction angles is interpreted in terms of vacancies in the overlayer.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Nyckelord
- METAL-SURFACES
- NA OVERLAYERS
- WORK FUNCTION
- CU(111)
- PSEUDOPOTENTIALS
- MONOLAYERS
- DENSITY
- SHIFTS
- OXYGEN
- FILMS
- OXYGEN
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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