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dc.contributor.authorPapageorgopoulos, A. C.en
dc.contributor.authorKamaratos, M.en
dc.date.accessioned2015-11-24T18:26:37Z-
dc.date.available2015-11-24T18:26:37Z-
dc.identifier.issn0953-8984-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/15912-
dc.rightsDefault Licence-
dc.subjectelectron-spectroscopyen
dc.subjectuv photoemissionen
dc.subjectadsorptionen
dc.subjectoxygenen
dc.subjectcsen
dc.subjectcesiumen
dc.subjectw(110)en
dc.subjectoxidationen
dc.subjectsulfuren
dc.subjectaesen
dc.titleK and S coadsorption on Ni(100) surfacesen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.secondary<Go to ISI>://000165347800010-
heal.identifier.secondaryhttp://iopscience.iop.org/0953-8984/12/44/309/pdf/0953-8984_12_44_309.pdf-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.publicationDate2000-
heal.abstractIn this contribution we report a study of K and S coadsorption on Ni(100) surfaces by means of Auger electron spectroscopy (AES), thermal desorption spectroscopy (TDS) and WF (work-function) measurements in UHV. Adsorption of elemental S on clean Ni(100) increases the binding energy, and the maximum coverage of the subsequently deposited K. The presence of the S underlayer maintains the ionicity of K adatoms close to the ionic state up to the completion of the first layer, at Phi (K) = 0.67 ML. The latter coverage is, thus, greater than the estimated 0.38 ML of K on clean Ni(100). The K overlayer on S-covered Ni(100) weakens the S-Ni bond, and forms a compound with S. The presence of S on Ni(100) lowers the WF minimum, Phi (min), of K on Ni(100) to a value of similar to1 eV, which is attributed to K-S compound formation. Deposited S atoms on K-covered Ni(100) are submerged under me K layer up to 0.5 ML and subsequently they are adsorbed on top of the K layer.en
heal.journalNameJournal of Physics-Condensed Matteren
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά) - ΦΥΣ

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