Electronic structure investigation of Ag(110)p(2×1)O surface

• Published in: Surface science Vol. 449; no. 1; pp. 111 - 124
• Main Authors: Sekiba, D., Nakamizo, H., Ozawa, R., Gunji, Y., Fukutani, H.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 20.03.2000; Amsterdam Elsevier Science; New York, NY
• Subjects: Adatoms; Angle resolved photoemission; Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Exact sciences and technology; Impurity and defect levels; energy states of adsorbed species; Low index single crystal surfaces; Metals. Metallurgy; Oxygen; Physics; Semi-empirical models and model calculation; Silver; Surface and interface electron states; Surface relaxation and reconstruction; Surface states, band structure, electron density of states; Silver; Oxygen; Surface relaxation and reconstruction; Low index single crystal surfaces; Angle resolved photoemission; Adatoms; Semi-empirical models and model calculation; Density of states; Electronic structure; Tight binding approximation; Transition elements; Ultraviolet photoelectron spectra; Adsorption structure; Experimental study; Surface structure
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/S0039-6028(99)01225-X

The electronic structure of the Ag(110)p(2×1)O surface was investigated by angle-resolved photoemission spectroscopy. The orbital symmetries of the O 2p–Ag 4d antibonding states were determined with the use of polarized light. A tight-binding two-dimensional energy band calculation including substrate contributions was made to reproduce the experimental surface band dispersions. The Slater–Koster two-center integrals between O 2p and Ag 4d, 5s, 5p orbitals were determined as fitting parameters. Using the same parameters, we calculated the oxygen-induced change in the density of states in Ag 4d band region, and could fully explain the experimentally observed spectral change as a results of oxygen-induced energy shifts as well as intensity changes. The Slater–Koster two-center integrals of oxygenmetal (Ni, Cu, Ag) orbitals were discussed as a function of the interatomic distance.