Analysis of the atomic geometries of the (101¯0) and (112¯0) surfaces of CdSe by low-energy-electron diffraction and low-energy-positron diffraction

Autor:	K. F. Canter, Stevens K, Brandes Gr, T. N. Horsky, Antoine Kahn, A. Paton, Allen P. Mills, D. L. Lessor, C.B. Duke, K. Stiles, S. F. Horng
Rok vydání:	1992
Předmět:	Diffraction chemistry.chemical_classification Materials science Low-energy electron diffraction business.industry Scattering Cleavage (crystal) Molecular physics Condensed Matter::Materials Science Optics Positron Low energy chemistry business Inorganic compound Wurtzite crystal structure
Zdroj:	Physical Review B. 46:7011-7026
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.46.7011
Popis:	The relaxed atomic geometries of the low-index cleavage surfaces of wurtzite-structure CdSe are determined via comparison of dynamical scattering calculations with measured low-energy-electron-diffraction (LEED) and low-energy-positron-diffraction (LEPD) intensities. Both surfaces are found to be relaxed in accordance with recently proposed geometries deduced from total-energy-minimization calculations. Since this analysis represents the use of LEPD for quantitative surface-structure determination, we discuss the experimental technique, the differences observed between LEPD and LEED, and the complementary nature of the two spectroscopies.
Databáze:	OpenAIRE
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