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Structural determination of the unreconstructed and the reconstructed (110) surfaces of iridium

Chan, C.-M. and Luke, K. L. and Van Hove, M. A. and Weinberg, W. H. and Williams, E. D. (1979) Structural determination of the unreconstructed and the reconstructed (110) surfaces of iridium. Journal of Vacuum Science and Technology, 16 (2). pp. 642-645. ISSN 0022-5355. http://resolver.caltech.edu/CaltechAUTHORS:CHAjvst79

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Abstract

An Ir(110) – (1×1) surface has been prepared by adsorbing 1/4 monolayer of oxygen at 850 K on a clean, reconstructed (1×2) surface. Good agreement was achieved between theoretical and experimental intensity–voltage (I–V) spectra for a surface model in which the oxygen is randomly and uniformly distributed over the cyrstal surface, and the (1×1) structure is the same as for a clean unreconstructed (1×1) surface with a topmost interlayer spacing of 1.26±0.05 Å. Three different models have been tested for the reconstructed Ir(110) – (1×2) surface, namely, the missing-row model, the paired rows model, and the buckled surface model. Based on the comparison between experimental data (consisting of ten half-order beams and eight integral-order beams) and the theoretical calculations, the mising-row model with a topmost interlayer spacing of 1.22±0.07 Å is the most satisfactory model tested.


Item Type:Article
Additional Information:© 1979 American Vacuum Society. (Received 20 September 1978; accepted 9 November 1978) This work was supported by the Army Research Office under Grant No. DAHC04-75-0170. [C.-M.C. was an] American Vacuum Society Predoctoral Fellow. [W.H.W. was an] Alfred P. Sloan Foundation Fellow, and Camille and Henry Dreyfus Foundation Teacher-Scholar. [E.D.W. as a] National Science Foundation Predoctoral Fellow.
Record Number:CaltechAUTHORS:CHAjvst79
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CHAjvst79
Alternative URL:http://dx.doi.org/10.1116/1.570042
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10915
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:16 Jun 2008
Last Modified:26 Dec 2012 10:06

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