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Absence of 2k_F 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 2k_F -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.

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

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