K and S coadsorption on Ni(100) surfaces
| dc.contributor.author | Papageorgopoulos, A. C. | en |
| dc.contributor.author | Kamaratos, M. | en |
| dc.date.accessioned | 2015-11-24T18:26:37Z | |
| dc.date.available | 2015-11-24T18:26:37Z | |
| dc.identifier.issn | 0953-8984 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/15912 | |
| dc.rights | Default Licence | - |
| dc.subject | electron-spectroscopy | en |
| dc.subject | uv photoemission | en |
| dc.subject | adsorption | en |
| dc.subject | oxygen | en |
| dc.subject | cs | en |
| dc.subject | cesium | en |
| dc.subject | w(110) | en |
| dc.subject | oxidation | en |
| dc.subject | sulfur | en |
| dc.subject | aes | en |
| dc.title | K and S coadsorption on Ni(100) surfaces | en |
| heal.abstract | In 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.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://000165347800010 | - |
| heal.identifier.secondary | http://iopscience.iop.org/0953-8984/12/44/309/pdf/0953-8984_12_44_309.pdf | - |
| heal.journalName | Journal of Physics-Condensed Matter | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2000 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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