Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.susc.2007.04.181
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dc.titleFormation and stabilization of Fe-induced magic clusters on Si(1 1 1)-(7 × 7) template
dc.contributor.authorZilani, M.A.K.
dc.contributor.authorSun, Y.Y.
dc.contributor.authorXu, H.
dc.contributor.authorPeng, G.W.
dc.contributor.authorFeng, Y.P.
dc.contributor.authorWang, X.-S.
dc.contributor.authorWee, A.T.S.
dc.date.accessioned2014-10-16T09:26:05Z
dc.date.available2014-10-16T09:26:05Z
dc.date.issued2007-06-15
dc.identifier.citationZilani, M.A.K., Sun, Y.Y., Xu, H., Peng, G.W., Feng, Y.P., Wang, X.-S., Wee, A.T.S. (2007-06-15). Formation and stabilization of Fe-induced magic clusters on Si(1 1 1)-(7 × 7) template. Surface Science 601 (12) : 2486-2490. ScholarBank@NUS Repository. https://doi.org/10.1016/j.susc.2007.04.181
dc.identifier.issn00396028
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/96665
dc.description.abstractWe demonstrate the growth of Fe-induced magic clusters on Si(1 1 1)-(7 × 7) template by in situ scanning tunneling microscopy (STM). These clusters form near a dimer row at one side of the half-unit cell (HUC); and with three different equivalent orientations. A cluster model comprising three top layer Si atoms bonded to six Fe atoms at the next layer in the 7 × 7 faulted-half template is proposed. The optimized cluster structure determined by first-principles total-energy calculation shows an inward-shifting of the three center Fe atoms. The clusters and the nearby center-adatoms of the next HUCs appear with a significantly reduced height below bias voltages 0.4 V in high resolution empty-state STM images, suggesting an energy gap opening near the Fermi level at these localized cluster and adatom sites. We explain the stabilization of the clusters on the 7 × 7 template using the gain in electronic energy as the driving force for cluster formation. © 2007.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.susc.2007.04.181
dc.sourceScopus
dc.subjectDensity functional calculations
dc.subjectIron
dc.subjectNanostructures
dc.subjectScanning tunneling microscopy
dc.subjectSelf-assembly
dc.subjectSilicon
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1016/j.susc.2007.04.181
dc.description.sourcetitleSurface Science
dc.description.volume601
dc.description.issue12
dc.description.page2486-2490
dc.description.codenSUSCA
dc.identifier.isiut000248029800014
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