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arXiv · 0909.2273

Surface X-ray Speckles: Coherent Surface Diffraction from Au (0 0 1)

M. S. Pierce·K. C. Chang·D. Hennessy·V. Komanicky·M. Sprung·A. Sandy·H. You
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Abstract

We present coherent speckled x-ray diffraction patterns obtained from a monolayer of surface atoms. We measured both the specular anti-Bragg reflection and the off-specular hexagonal reconstruction peak for the Au (0 0 1) surface reconstruction. We observed fluctuations of the speckle patterns even when the integrated intensity appears static. By auto-correlating the speckle patterns, we were able to identify two qualitatively different surface dynamic behaviors of the hex reconstruction depending on the sample temperature.

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M. S. Pierce, K. C. Chang, D. Hennessy, V. Komanicky, M. Sprung, A. Sandy, H. You. 2009-09-11. Surface X-ray Speckles: Coherent Surface Diffraction from Au (0 0 1). https://doi.org/10.1103/physrevlett.103.165501

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