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Local orbital analysis of the bonding of oxygen atoms on nickel (001) from self-consistent electronic structure

Godby, R.W., Benesh, G.A., Haydock, R. and Heine, V. (1985) Local orbital analysis of the bonding of oxygen atoms on nickel (001) from self-consistent electronic structure. Physical Review B, 32 (2). pp. 655-661. ISSN 1098-0121

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Abstract

We have calculated self-consistently the electronic structure of a model of a c(2×2) oxygen overlayer on the nickel (001) surface using the linearized augmented-plane-wave method, obtaining good agreement with the experimentally measured electronic excitation spectra. Our purpose has been to analyze the charge density, wave functions, bond orders, local densities of states, and energy levels to obtain a picture of the bonding between the oxygen and the nickel surface. We find that the oxygen 2p states hybridize more strongly with the nickel 4s4p bands than with the 3d bands, and we demonstrate that the optimal local orbitals for the oxygen nucleus which span the resulting 2p-like bands centered at EF-5.5 eV resemble large oxygen 2p orbitals. Bond orders exhibit the bonding nature of these states and the existence of antibonding states above EF.

Item Type: Article
Copyright, Publisher and Additional Information: © 1985 American Physical Society. Published in Physical Review B and uploaded in accordance with the publisher's self archiving policy.
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Physics Import
Date Deposited: 17 Sep 2008 17:39
Last Modified: 18 Sep 2008 18:32
Published Version: http://link.aps.org/abstract/PRB/v32/p655
Status: Published
Publisher: American Physical Society
Refereed: Yes
Identification Number: 10.1103/PhysRevB.32.655
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/3957

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