Probing step decoration by grazing-incidence helium scattering

We describe a method for the in situ study of step decoration modes in vapor-phase epitaxial growth. It is based on the large cross-section of thermal energy He atoms for diffuse scattering exhibited by surface defects. In grazing-incidence scattering geometry, this sensitivity can be used to monito...

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Veröffentlicht in:	Surface science 1998-09, Vol.414 (3), p.L964-L969
Hauptverfasser:	Blanc, Martial, Kuhnke, Klaus, Marsico, Vittorio, Kern, Klaus
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Atom–solid scattering and diffraction – elastic Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Growth Metals. Metallurgy Physics Platinum Silver Solid surfaces and solid-solid interfaces Surface defects Surface structure and topography Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties)
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Beschreibung
Zusammenfassung:	We describe a method for the in situ study of step decoration modes in vapor-phase epitaxial growth. It is based on the large cross-section of thermal energy He atoms for diffuse scattering exhibited by surface defects. In grazing-incidence scattering geometry, this sensitivity can be used to monitor ordering and growth processes at step edges. We illustrate the method with results for Ag and Pt deposition at the {111} steps on the vicinal Pt(997) surface.
ISSN:	0039-6028 1879-2758
DOI:	10.1016/S0039-6028(98)00561-5