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|Title:||Study of a computational-time-saving scheme for quantitative LEED analysis by the matrix inversion method|
|Authors:||Sun, Y.Y. |
|Source:||Sun, Y.Y.,Wee, A.T.S.,Huan, A.C.H. (2003-04). Study of a computational-time-saving scheme for quantitative LEED analysis by the matrix inversion method. Surface Review and Letters 10 (2-3) : 493-497. ScholarBank@NUS Repository.|
|Abstract:||A computational-time-saving scheme for quantitative LEED analysis by the matrix inversion method was studied. Two computational-time-critical parameters, the number of atomic layers (Nl) in the surface slab and the number of ion-core scattering phase shifts (lmax), were tested for energy dependence. Our study on a Cu(210) surface shows that no dependence of Nl on the incident energy exists in the energy range of LEED (50-400 eV), i.e. using energy-dependent Nl is not feasible. The effect of slab thickness reduction on the precision of the Pendry R-factor based best-fit structure search was then studied. This study provides a guide to the selection of surface slab thickness in quantitative LEED analysis by the matrix inversion method. Also, we show that using an energy-dependent lmax can save nearly half of the overall computational time for obtaining a set of I-V curves by the matrix inversion method.|
|Source Title:||Surface Review and Letters|
|Appears in Collections:||Staff Publications|
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