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Initial growth of silver on Ge(111) studied by scanning tunneling microscopy
KTH, Superseded Departments, Physics.
1993 (English)In: Physical Review B, ISSN 01631829 (ISSN), Vol. 47, no 23, 15669-15674 p.Article in journal (Refereed) Published
Abstract [en]

Scanning tunneling microscopy (STM) has been used to study the Ge(111) surface after submonolayer depositions of Ag. At the lowest coverages a (4×4) reconstruction, with small insets of a (3×1) edge structure, is observed. Based on the STM images we propose a mixed Ag and Ge adatom structure for the (4×4) reconstruction, in which the adatoms have local (1×1) and (2×2) arrangements corresponding to a Ag coverage of 6/16 monolayers. The (3×1) structure appears to have a configuration similar to the Si(111)/Ag-(3×1) reconstruction, although in this case it has a much more limited extension, restricted to a few unit cells in the near vicinity of step edges and phase boundaries. At higher coverages, after the completion of a full (4×4)/(3×1) surface, a (3 × 3) R30°structure appears showing STM images similar to those previously published for the Si(111)/Ag system. © 1993 The American Physical Society.

Place, publisher, year, edition, pages
1993. Vol. 47, no 23, 15669-15674 p.
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-83046DOI: 10.1103/PhysRevB.47.15669OAI: diva2:498704
Correspondence Address: Hammar, M.; Department of Physics, Materials Science, Royal Institute of Technology, S-100 44 Stockholm, Sweden NR 20140805Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2012-02-12Bibliographically approved

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