Step interactions on Pt(111) vicinal surfaces determined by grazing incidence x-ray diffraction: influence of the step orientation - Archive ouverte HAL Access content directly
Journal Articles Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces Year : 2010

Step interactions on Pt(111) vicinal surfaces determined by grazing incidence x-ray diffraction: influence of the step orientation

Abstract

We have studied the step–step interactions on the Pt(997) vicinal surface. Grazing incidence X-ray diffraction (GIXD) allowed us to measure the elastic atomic relaxations near the surface due to the steps. By means of the model of buried elastic dipoles, within the framework of anisotropic linear elasticity (ALE) calculations, the surface stress of Pt(111), and the elastic interaction between steps are deduced. The values so-obtained are compared to the values previously measured on the Pt(779) surface with the same technique. The comparison shows the strong influence of step geometry on step interactions.
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Dates and versions

hal-00510659 , version 1 (20-08-2010)

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Geoffroy Prévot, Luc Barbier, Paul Steadman. Step interactions on Pt(111) vicinal surfaces determined by grazing incidence x-ray diffraction: influence of the step orientation. Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 2010, 604, pp.1265-1272. ⟨10.1016/j.susc.2010.04.012⟩. ⟨hal-00510659⟩
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