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An ordered layer of molecular iodine on Ge(100) 2x1
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0001-7409-575X
2004 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 556, no 03-feb, 203-212 p.Article in journal (Refereed) Published
Abstract [en]

Adsorption of iodine on the Ge(1 0 0) (2 x 1) surface has been investigated by core level and valence band photoelectron spectroscopy and scanning tunnelling microscopy. Iodine binds to dimer atom dangling bonds without disrupting the dimers at all coverages. At saturation a c(2 x 2) ordered layer of molecular iodine develops on top of a (2 x 2) ordered structure of atomic iodine binding to asymmetric Ge-dimers. Annealing destroys the molecular character and etches the surface by Ge dimer bond breaking and attachment of additional iodine to these Ge atoms to form GeI2, which desorbs from the surface.

Place, publisher, year, edition, pages
2004. Vol. 556, no 03-feb, 203-212 p.
Keyword [en]
photoelectron spectroscopy, scanning tunneling microscopy, germanium, iodine, single crystal surfaces, adsorption kinetics, core-level shifts, x-ray-diffraction, photoelectron-spectroscopy, asymmetric dimers, ge(111) surface, photoemission, ge(001), reconstruction, adsorption, c(4x2)
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-23398DOI: 10.1016/j.susc.2004.03.024ISI: 000221288000013Scopus ID: 2-s2.0-2142805989OAI: oai:DiVA.org:kth-23398DiVA: diva2:342096
Note
QC 20100525 QC 20111025Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Karlsson, Ulf O.

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