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X-ray reflectivity of the Cu(110) surface

The specular reflectivity from the (110) surface of a copper single crystal was measured for temperatures between 300 and 1100 K. At lower temperatures the reflectivity is well described by a model that yields a contraction of the spacing between the first and the second surface layers by 8% relativ...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1993-11, Vol.48 (20), p.15320-15325
Main Authors: HELGESEN, G, GIBBS, D, BADDORF, A. P, ZEHNER, D. M, MOCHRIE, S. G. J
Format: Article
Language:English
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Summary:The specular reflectivity from the (110) surface of a copper single crystal was measured for temperatures between 300 and 1100 K. At lower temperatures the reflectivity is well described by a model that yields a contraction of the spacing between the first and the second surface layers by 8% relative to the bulk layer separation. The fits also show large surface-normal vibrational amplitudes within the first few atomic layers. The line shape of the scattering transverse to the specular direction has two components below 1000 K and evolves with increasing temperature. Present data do not preclude the existence of a surface-roughening transition.
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.48.15320