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Saldin Research Group
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Direct Method for Low Energy Electron Diffraction
We have developed a solution to the multiple-scattering inverse problem
for low-energy electron diffraction that enables the determination of
the three-dimensional atomic structure of an entire surface unit cell
directly from measured data. The solution requires a knowledge of the
structure of the underlying bulk crystal and is implemented by an
algorithm that alternately satisfies constraints in real and reciprocal
space.
References:
"Solution of a Multiple-Scattering
Inverse Problem: Electron Diffraction from Surfaces", D. K. Saldin,
A. Seubert, and K. Heinz, Phys. Rev. Lett. 88, art. no. 115507
(2002).
"Direct Determination by Low Energy Electron Diffraction of the Atomic Structure of Surface Layers on a Known Substrate"
, A. Seubert, K. Heinz, and D. K. Saldin, Phys. Rev. B 67, art. no. 25417 (2003).
"Holographic Surface Crystallography: Substrate as Reference",
R. J. Harder and D. K. Saldin, Handbook on Solid State Photoemission
and Electron Diffraction, edited by M. A. Van Hove and W. Schattke
(Wiley-VCH, Weinheim, 2003).
"Direct Methods for Surface Crystallography"
, D. K. Saldin and V. L. Shneerson, submitted to the special issue of
J. Phys.: Condens. Matter in honor of Prof. Sir John Pendry, F.R.S.