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ELECTRONIC PROPERTIES OF CALCIUM ULTRATHIN LAYERS ONCu(111): A HIGH-RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY STUDY

Author

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  • ANTONIO POLITANO

    (Universidad Autónoma de Madrid, Departamento de Fisica de la Materia, Condensada, Campus de Cantoblanco, 28049 Madrid, Spain)

Abstract

The electronic properties of aCabilayer deposited onCu(111)have been investigated by high-resolution electron energy loss spectroscopy. For the as-depositedCabilayer, the surface plasmon was recorded at 3.3eV. Temperature induces a surface metal-insulator transition (evidenced by the shift of the surface plasmon energy), leading to the formation ofCaOthin layers which are highly reactive towards water molecules. The presence of occupied d band in the calcium overlayer modifies surface plasmon frequency and strongly influences its dispersion relation. Results are well explained within the framework of the s-d polarization theory.

Suggested Citation

  • Antonio Politano, 2010. "ELECTRONIC PROPERTIES OF CALCIUM ULTRATHIN LAYERS ONCu(111): A HIGH-RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY STUDY," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 17(04), pages 411-417.
    • Handle: RePEc:wsi:srlxxx:v:17:y:2010:i:04:n:s0218625x10014181
    DOI: 10.1142/S0218625X10014181
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