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Surface state energy shifts by molecular adsorption: CO on clean and Na covered Cu(111)
1982 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 117, no 1-3, p. 426-433Article in journal (Refereed) Published
Abstract [en]

Angle resolved photoelectron energy spectra recorded in the near UV show that the surface state 0.4 eV below EF of Cu(111) shifts to higher energy upon CO adsorption. The surface band related emission intensity is reduced by the adsorption at a rate suggesting that each adsorbed molecule wipes out the surface state over an area corresponding to seven surface layer Cu atoms. The surface state energy shift is not as closely related to the adsorbate induced workfunction change as found theoretically and experimentally for alkali adsorbates. The influence on the shift of the workfunction and initial energy of the surface state is studied by preadsorbing Na on the Cu(111) surface.

Place, publisher, year, edition, pages
1982. Vol. 117, no 1-3, p. 426-433
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Fysik
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URN: urn:nbn:se:ltu:diva-10867DOI: 10.1016/0039-6028(82)90526-XLocal ID: 9bd82c20-3869-11dd-8721-000ea68e967bOAI: oai:DiVA.org:ltu-10867DiVA, id: diva2:983815
Note
Upprättat; 1982; 20080612 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Paul, Jan

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