ELECTRONIC PROPERTIES OF CALCIUM ULTRATHIN LAYERS ON Cu(111): A HIGH-RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY STUDY-Reference-Cited by-同舟云学术

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

Published:2010-08 Issue:04 Volume:17 Page:411-417
ISSN:0218-625X
Container-title:Surface Review and Letters
language:en
Short-container-title:Surf. Rev. Lett.

Author:

POLITANO ANTONIO¹

Affiliation:

1. Universidad Autónoma de Madrid, Departamento de Fisica de la Materia, Condensada, Campus de Cantoblanco, 28049 Madrid, Spain

Abstract

The electronic properties of a Ca bilayer deposited on Cu(111) have been investigated by high-resolution electron energy loss spectroscopy. For the as-deposited Ca bilayer, 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 of CaO thin 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.

Publisher

World Scientific Pub Co Pte Lt

Subject

Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218625X10014181

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