Adsorption site of alkali metal overlayers on Si(001) 2 × 1

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buir.contributor.authorÇıracı, Salim
buir.contributor.orcidÇıracı, Salim|0000-0001-8023-9860
dc.citation.epage894en_US
dc.citation.issueNumberPART 1en_US
dc.citation.spage889en_US
dc.citation.volumeNumber42-44en_US
dc.contributor.authorBatra, I. P.en_US
dc.contributor.authorÇıracı, Salimen_US
dc.date.accessioned2016-02-08T10:55:31Z
dc.date.available2016-02-08T10:55:31Z
dc.date.issued1992en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractThe alkali metal semiconductor interfaces are currently being investigated by a variety of tools. Most studies to date at half a monolayer coverage have shown preference for either a quasi-hexagonal (H) site or a long-bridge (B) site. At this coverage one-dimensional chain structure for K on Si(001) 2 × 1 have now been confirmed by scanning tunneling microscopy (STM). The data, however, is consistent with either of the two sites. STM investigations at low coverages suggested that alkali metals like K and Cs occupy a novel site, Y, which is a bridge site between two Si atoms belonging to different dimers along the dimer row [110] direction. The total energy calculations for this new Y site, discovered by STM, have shown that it is indeed a site of (local) energy minimum. The ability of the surface silicon atoms, which are not adjacent to the alkali metal atom, to buckle makes the Y site a competitive adsorption site. We deduce the nature of bonding between alkali metals and Si using the STM data. It is concluded that the bond is substantially ionic in nature. © 1992.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T10:55:31Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 1992en
dc.identifier.doi10.1016/0304-3991(92)90374-Sen_US
dc.identifier.issn0304-3991
dc.identifier.urihttp://hdl.handle.net/11693/26132
dc.language.isoEnglishen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/0304-3991(92)90374-Sen_US
dc.source.titleUltramicroscopyen_US
dc.subjectAdsorptionen_US
dc.subjectAlkali Metalsen_US
dc.subjectAtomsen_US
dc.subjectCesiumen_US
dc.subjectMicroscopic Examinationen_US
dc.subjectPotassiumen_US
dc.subjectStructure (composition)en_US
dc.subjectSurfacesen_US
dc.subjectYttriumen_US
dc.subjectAdsorption Sitesen_US
dc.subjectDimersen_US
dc.subjectIonic Bondsen_US
dc.subjectScanning Tunneling Microscopyen_US
dc.subjectSemiconducting Siliconen_US
dc.subjectconference paperen_US
dc.subjectmicroscopyen_US
dc.subjectscanning tunneling microscopyen_US
dc.titleAdsorption site of alkali metal overlayers on Si(001) 2 × 1en_US
dc.typeArticleen_US

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