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Resonant X-Ray Scattering from the Surface of a Dilute Hg-Au Alloy

Elaine DiMasi·Holger Tostmann·Oleg G. Shpyrko·Patrick Huber·Benjamin M. Ocko·Peter S. Pershan·Moshe Deutsch·Lonny E. Berman
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Abstract

We present the first resonant x-ray reflectivity measurements from a liquid surface. The surface structure of the liquid Hg-Au alloy system just beyond the solubility limit of 0.14at% Au in Hg had previously been shown to exhibit a unique surface phase characterized by a low-density surface region with a complicated temperature dependence. In this paper we present reflectivity measurements near the Au LIII edge, for 0.2at% Au in Hg at room temperature. The data are consistent with a concentration of Au in the surface region that can be no larger than about 30at%. These results rule out previous suggestions that pure Au layers segregate at the alloy surface.

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Elaine DiMasi, Holger Tostmann, Oleg G. Shpyrko, Patrick Huber, Benjamin M. Ocko, Peter S. Pershan, Moshe Deutsch, Lonny E. Berman. 2004-12-06. Resonant X-Ray Scattering from the Surface of a Dilute Hg-Au Alloy. https://arxiv.org/abs/cond-mat/0412113

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