Surface X-Ray Speckles: Coherent Surface Diffraction from Au(001)

被引：33

作者：

Pierce, M. S. ^{[1
]}

Chang, K. C. ^{[1
]}

Hennessy, D. ^{[1
]}

Komanicky, V. ^{[1
,2
]}

Sprung, M. ^{[3
,4
]}

Sandy, A. ^{[3
]}

You, H. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Safarik Univ, Fac Sci, Kosice 04001, Slovakia

[3] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[4] DESY, HASYLAB, D-2000 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 16期

关键词：

RECONSTRUCTION; GOLD; SCATTERING; FLUCTUATIONS; REFLECTIVITY; MECHANISM; PHASES; DOMAIN;

D O I：

10.1103/PhysRevLett.103.165501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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(001) surface reconstruction. We observed fluctuations of the speckle patterns even when the integrated intensity appears static. By autocorrelating the speckle patterns, we were able to identify two qualitatively different surface dynamic behaviors of the hex reconstruction depending on the sample temperature.

引用

页数：4

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