The theory of tensor LEED

We present a method for high-speed surface structure determination by low energy electron diffraction called tensor LEED. Tensor LEED is a perturbative approach to the calculation of LEED I – V spectra in which an initial reference surface is distorted to generate a particular trial structure. If th...

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Bibliographic Details
Published in:Surface science 1989-09, Vol.219 (3), p.355-372
Main Authors: Rous, P.J., Pendry, J.B.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Electron diffraction and scattering
Exact sciences and technology
Physics
Structure of solids and liquids
crystallography
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Summary:We present a method for high-speed surface structure determination by low energy electron diffraction called tensor LEED. Tensor LEED is a perturbative approach to the calculation of LEED I – V spectra in which an initial reference surface is distorted to generate a particular trial structure. If these atomic displacements are small then we can use a first order perturbation theory to calculate the resultant changes in the LEED I – V spectra. This leads to a highly efficient calculational technique which can reduce the computational effort expended upon a typical structure determination by several orders of magnitude.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(89)90513-X