Stranski-Krastanov growth of CuCl on MgO(001) |
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| Institution: | 1. Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Ensenada, BC C.P. 22860, Mexico;2. Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana, BC, Mexico;3. Centro de Investigación y Desarrollo Tecnológico en Electroquímica, Tijuana, BC C.P. 22444, Mexico;4. Institut de Recherches sur la Catalyse et l’Environnement de Lyon (IRCELYON), CNRS – Université Lyon I, Villeurbanne, France;1. College of Electrical Engineering, Naval University of Engineering, Wuhan, 430033, PR China;2. College of Education, Central China Normal University, Wuhan, 430079, PR China;1. Electric Power Research Institute, 3420 Hillview Avenue, Palo Alto 94304, USA;2. National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden 80401, USA;1. Aix Marseille Univ, IM2NP, Fac Sci St Jérôme, F-13397 Marseille, France;2. CNRS LAAS, 7 avenue du Colonel Roche, F-31400 Toulouse, France;3. Univ de Toulouse, LAAS, F-31400 Toulouse, France |
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| Abstract: | Initial growth of CuCl, a zinc-blende-structure I–VII ionic compound, on MgO(001) with NaCl-type structure has been studied using reflection high-energy electron diffraction (RHEED) and atomic force microscopy (AFM). An intermediate layer of adsorbed CuCl, which has a surface structure strongly influenced by the host lattice, was formed before islanding. This layer is easily distinguished from (111) top surfaces of the CuCl islands with trigonal symmetry which have been grown subsequently. This implies that CuCl grows in the Stranski-Krastanov growth mode, which also explains why the nucleation of the islands is insensitive to the step edges of MgO(001). |
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