Symmetry superposition studied by surface second-harmonic generation

G. Lüpke, G. Marowsky, R. Steinhoff, A. Friedrich, B. Pettinger, and D. M. Kolb
Phys. Rev. B 41, 6913 – Published 1 April 1990
PDFExport Citation

Abstract

The components of a third-rank χ(2) tensor have been split into contributions due to 1-fold, 2-fold, 3-fold, and ∞-fold or isotropic rotation axes for a surface of Cs symmetry. Theoretical analysis of the rotation patterns obtained by the surface second-harmonic (SH) generation indicates that a complete symmetry analysis cannot be performed without knowledge of the relevant distribution functions. Rotation axes of lower symmetry create via ‘‘overtones’’ or ‘‘harmonics’’ contributions apparent in the analysis of the rotation axes of higher symmetry. An experimental example is the observation of structural changes of Au(111) surfaces in an aqueous electrolytic environment. Potential-dependent buildup and removal of a Au(111)-(1×23) surface could be monitored in situ and in real time. Symmetry analysis of the SH rotation patterns reveals both contributions due to a 3-fold axis due to the regular (1×1) structure and simultaneously a 1-fold and a 2-fold axis due to the (1×23) reconstruction.

  • Received 5 September 1989

DOI:https://doi.org/10.1103/PhysRevB.41.6913

©1990 American Physical Society

Authors & Affiliations

G. Lüpke, G. Marowsky, and R. Steinhoff

  • Max-Planck-Institut für Biophysikalische Chemie, Abteilung Laserphysik, Am Fassberg, D-3400 Göttingen, Federal Republic of Germany

A. Friedrich, B. Pettinger, and D. M. Kolb

  • Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-1000 Berlin 33, Federal Republic of Germany

References (Subscription Required)

Click to Expand
Issue

Vol. 41, Iss. 10 — 1 April 1990

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×