Journal Article

PreJuSER-3828

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Reconstruction on Au(001) Vicinal Surfaces in UHV and in Sulfuric Acid Solution

Moiseeva, M.FZJ* ; Pichardo-Pedrero, E.FZJ* ; Beltramo, G. L.FZJ* ; Ibach, H.FZJ* ; Giesen, M.FZJ*

2009
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.susc.2009.01.006

Abstract: Using scanning tunneling microscopy we have studied the reconstruction on Au(1 1 n) surfaces in ultra-high vacuum and in electrolyte. Similar to the well-known (5 x 20) quasi-"hex" reconstruction on Au(0 0 1), the reconstruction consists of parallel reconstruction lines along the steps indicative of a higher atom density in the first Au layer. In contrast to nominally flat Au(0 0 1) where the reconstruction period is 1.44 nm, we find considerably larger reconstruction periods (1.8-1.96 nm) on incidentally flatter regions of nominal Au(1 1 9), Au(1 1 11), and Au(1 1 17) surfaces. The enlarged reconstruction period is attributed to the stress field on stepped surfaces. In agreement with previous studies we find a reconstruction free zone at the step edges. (C) 2009 Elsevier B.V. All rights reserved.

Keyword(s): J ; Gold (auto) ; Vicinal single crystal surfaces (auto) ; Metal-electrolyte interfaces (auto) ; Metallic surfaces (auto) ; Surface relaxation and reconstruction (auto)

Note: We acknowledge the skillful sample preparation by U. Linke (www.icryst.com). The work was supported by Deutsche Forschungsgemeinschaft and Fonds der Chemischen Industrie. One of us (H.I.) furthermore acknowledges enlightening discussion with Volker Blum, Fritz-Haber Institute, Berlin, regarding recent progress in total energy calculations on systems with large reconstruction unit cells.

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Contributing Institute(s):

1. Biomechanik (IBN-4)

Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2009

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