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Articles you may be interested inElectrical properties and stability of an epitaxial alumina film formed on Cu-9 at. % Al(111) J. Vac. Sci. Technol. A 30, 021509 (2012); 10.1116/1.3688493 Evolution in surface morphology of epitaxial graphene layers on SiC induced by controlled structural strain Formation and evolution of epitaxial Co 5 Ge 7 on Ge ( 001 ) surface by reactive deposition inside an ultrahighvacuum transmission electron microscope Appl. Phys. Lett. 86, 071904 (2005); 10.1063/1.1862331Temperature-dependent morphology evolution of the submonolayer clusters grown on fcc metal (110) surfaces J.Regular ridge-and-valley surface structures were spontaneously formed by the homoepitaxial growth of LiF͑110͒ and CaF 2 ͑110͒. The surface structure was examined by in situ reflection high-energy electron diffraction ͑RHEED͒ and ex situ atomic force microscopy ͑AFM͒. The LiF͑110͒ homoepitaxial surfaces exhibited regular ridge-and-valley structures composed of ͕100͖ facets and ͓001͔ macrosteps, and the ridge spacings increased with growth temperature. The CaF 2 ͑110͒ surfaces also exhibited regular ridge-and-valley structures composed of ͕111͖ facets and ͓110͔ macrosteps when deposited above 400°C. Annealing alone did not produce a well-developed ridge-and-valley structure. The highly mobile admolecules supplied during deposition played a central role on the morphological evolution of the surfaces. The heteroepitaxial growth of LiF and CaF 2 on ͕100͖-faceted NaCl͑110͒ substrates was also examined. Although the LiF͑110͒ exhibited a regular ridge-and-valley structure, CaF 2 ͑110͒ formed arrays of islands at the bottom of the grooves.

Electrical transport and magneto-optical Kerr effect have been measured on Co͞(Cr͞Ag)͞Co multilayers in which the thickness l of the bimetallic nonmagnetic spacer Cr͞Ag varies from 0 to 35 Å. The measurements clearly indicate the presence of antiferromagnetic coupling for 9 , l , 23 Å. At low temperatures ͑T , 20 K͒, the resistivity shows a logarithmic increase which is most probably caused by the two-dimensional electron-electron interactions. The magnitude of the log 10 T term and of the negative magnetoresistance varies periodically with a period corresponding approximately to one monolayer of Cr. [S0031-9007(96)