ICAMS / Interdisciplinary Centre for Advanced Materials Simulation


Absence of 2kF splitting in the diffuse scattering from Cu3Au at the (001) surface

H. Reichert, O. Klein, V. N. Bugaev, O. Shchyglo, A. Udyansky, H. Dosch, K. F. Peters.

Physical Review Letters, 90, 185504/1-4, (2003)

We report a new type of short-range order correlations at the (001) surface of Cu3Au which no longer produces the 2kF -splitting characteristic for the bulk short-range order scattering. We present the temperature dependence of this phenomenon and a theoretical interpretation of its origin. We argue that this new surface effect is caused by a drastic change of the strain-induced interactions at the surface.

Keyword(s): copper alloys; gold alloys; short-range order; stress effects; surface structure; X-ray scattering
DOI: 10.1103/PhysRevLett.90.185504
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