Azimuthally resolved optical second-harmonic generation from hydrogen on nickel(111)

The first azimuthally resolved measurements of the effect of an adsorbed gas on optical second-harmonic generation (SHG) from a clean, well-ordered metal surface are presented. The second-harmonic intensity from Ni(111) decreases rapidly upon hydrogen adsorption; however, the threefold symmetry with...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1988-10, Vol.38 (12), p.8451-8454
Main Authors: ANDERSON, R. J. M, HAMILTON, J. C
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
General and physical chemistry
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Physics
Solid-gas interface
Specific materials
Surface physical chemistry
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Summary:The first azimuthally resolved measurements of the effect of an adsorbed gas on optical second-harmonic generation (SHG) from a clean, well-ordered metal surface are presented. The second-harmonic intensity from Ni(111) decreases rapidly upon hydrogen adsorption; however, the threefold symmetry with sample rotation about the surface normal is retained. The beta sub 1 and beta sub 2 adsorption states are clearly resolved and their contributions to the second-order susceptibility are determined. For this system, SHG is highly sensitive to local site symmetry and little affected by long-range ordering of adsorbates. 15 ref.--AA
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.38.8451