MAGNETIC PROPERTIES OF ICOSAHEDRAL COPPER-COATED COBALT CLUSTERS

Baolin Wang (), Xiaoshuang Chen, Guibin Chen, Guanghou Wang and Jijun Zhao ()
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Baolin Wang: Department of Physics, Huaiyin Institute of Technology, Jiangsu 223001, P. R. China;
Xiaoshuang Chen: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P. R. China
Guibin Chen: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P. R. China
Guanghou Wang: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
Jijun Zhao: Department of Physics and Astronomy, University of North Carolina Chapel Hill, Chapel Hill, North Carolina 27599, USA

Surface Review and Letters (SRL), 2004, vol. 11, issue 01, 15-20

Abstract: The structural and magnetic properties ofCu-coatedCoclusters are investigated with empirical genetic algorithm simulation and a spin-polarizedspdtight-binding model Hamiltonian. In some specific stoichiometric compositions, icosahedralCon(n=1, 2, 4, 7, 13, 19, 55)clusters perfectly coated with ACumonolayer or dual layer are obtained. The outerCulayers lead to significant modification of the magnetic moment of theCocore, depending on the structure and thickness of theCulayers. The interaction betweenCuandCoatoms induces a nonzero magnetic moment forCuatoms.

Keywords: 75.75.+a; 75.40Mg; 36.40.Cg; 61.46.+w (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1142/S0218625X0400586X

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