Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/497
Title: Elastic displacements and step interactions on metallic surfaces: Grazing-incidence x-ray diffraction and ab initio study of Au(332)
Authors: Prevot, G
Girard, Y
Repain, V
Rousset, S
Coati, A
Garreau, Y
Paul, Jaita
Mammen, Nisha
Narasimhan, Shobhana
Keywords: Kink-Formation Energies
Vicinal Surfaces
Electronic-Structure
Work Function
Stress
Energetics
Transition
Nanostructures
Reconstruction
Platinum
Issue Date: Feb-2010
Publisher: American Physical Society
Citation: Physical Review B 81(7), 075415-(1-10) (2010)
Abstract: We have studied the energetics, relaxation, and interactions of steps on the Au(332) vicinal surface using a combination of grazing incidence x-ray diffraction, anisotropic linear elasticity theory, and ab initio density-functional theory. We find that the initial force distribution on a bulk-truncated surface, as well as the resulting pattern of atomic relaxations, can be reproduced excellently by a buried dipole elastic model. The close agreement obtained between experimental and calculated x-ray diffraction profiles allows us to precisely determine the value of the elastic dipole density at the steps. We also use these results to obtain an experimental estimate of the surface stress on an unreconstructed Au(111) facet, tau(Au(111)) = 2.3 +/- 0.4 Nm(-1), and the value of the step-step elastic interaction energy A = 950 +/- 150 meV angstrom.
URI: http://hdl.handle.net/10572/497
Other Identifiers: 1098-0121
Appears in Collections:Research Articles (Shobhana Narasimhan)

Files in This Item:
File Description SizeFormat 
Physical Review B 81(7), 075415 (2010).pdf
  Restricted Access
705.83 kBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.