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Surface electronic structures of Au-induced reconstructions on the Ag/Ge(1 1 1) v3 × v3 surface
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface and Semiconductor Physics.
Graduate School of Advanced Integration Science, Chiba University, Chiba 266-8522, Japan.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Surface and Semiconductor Physics.
2003 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 532-535, 934-939 p.Article in journal (Refereed) Published
Abstract [en]

A small amount of Au atoms deposited at room temperature transforms the Ag/Ge(1 1 1)v3 × v3 surface into a v 39 × v39 surface. The presence of the Au atoms leads to downward shifts and modifications of the surface state bands compared to the initial v3 × v3 surface. Further deposition of Au on the v39 × v39 surface changes it into a 6 × 6 periodicity. At the same time the surface electronic structure changes from a metallic to a semiconducting phase with a gap of around 0.2 eV with respect to the Fermi-level. Finally, the 6 × 6 phase transforms into a new 2v3 × 2v3 phase when more Au is added, and the surface switches back to a metallic state. © 2003 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
2003. Vol. 532-535, 934-939 p.
Keyword [en]
Germanium, Gold, Low energy electron diffraction (LEED), Photoemission (total yield), Silver, Surface structure, morphology, roughness, and topography
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46596DOI: 10.1016/S0039-6028(03)00134-1OAI: oai:DiVA.org:liu-46596DiVA: diva2:267492
Conference
Surface Science
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2012-02-06

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Zhang, HanminUhrberg, Roger

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