Journal Article

PreJuSER-7118

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Influence of the substrate bands on the sp-levels topology of Ag films on Ge(111)

Moras, P. ; Topwal, D. ; Sheverdyaeva, P. M. ; Ferrari, L. ; Fujii, J. ; Bihlmayer, G.FZJ* ; Blügel, S.FZJ* ; Carbone, C.

2009
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/11015  doi:10.1103/PhysRevB.80.205418

Abstract: Angle-resolved photoemission spectroscopy and first-principles calculations were employed to analyze unusual features in the electronic structure of ultrathin Ag films grown on Ge(111). The Ag sp-derived quantum well states exhibit hexagonal-like constant energy contours with different in-plane orientations near the center of the surface Brillouin zone, in striking contrast to the expectations for a free-standing Ag(111) layer. The experimental observations are explained by taking into account the effects of hybridization of the Ag states with the star-like shaped Ge band edges on constant energy planes.

Keyword(s): J

Note: We acknowledge partial financial support through the EUROCORES SANMAG project of the European Science Foundation.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Quanten-Theorie der Materialien (IAS-1)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
4. Jülich Aachen Research Alliance - High-Performance Computing (JARA-HPC)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2009

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