Bibliographic Details
| Title: |
Surface diffraction structure determination from combinatorial simultaneous optimization |
| Authors: |
Blanco-Rey, M. maria.blanco@icmm.csic.es, de Andres, Pedro L.1 pedro@icmm.csic.es |
| Source: |
Surface Science. Apr2006, Vol. 600 Issue 7, pL91-L95. 0p. |
| Subjects: |
Optical diffraction, Electron scattering, Combinatorial optimization, Parameter estimation |
| Abstract: |
Abstract: We present a technique to efficiently locate the global minimum of a cost function on a complex multi-dimensional parameter space (e.g. a structural reliability R-factor). The method builds a convergent series of structures from combinatorial simultaneous optimization of all the parameters on different subspaces of the experimental data base. Performance has been tested for two model situations: (1) phase retrieval from electron scattering by a single atom and (2) low-energy electron diffraction analysis of simulated I(V) curves for the Ir(110)-p(2×1) missing row. Compared under the same conditions, a reduction in the computation effort, is found w.r.t. previous state-of-the-art methods (e.g., simulated annealing and genetic algorithms). [Copyright &y& Elsevier] |
|
Copyright of Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Engineering Source |
