کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5424312 | 1395819 | 2009 | 6 صفحه PDF | دانلود رایگان |
Using scanning tunneling microscopy we have studied the reconstruction on Au(1Â 1Â n) surfaces in ultra-high vacuum and in electrolyte. Similar to the well-known (5Â ÃÂ 20) quasi-“hex” reconstruction on Au(0Â 0Â 1), the reconstruction consists of parallel reconstruction lines along the steps indicative of a higher atom density in the first Au layer. In contrast to nominally flat Au(0Â 0Â 1) where the reconstruction period is 1.44Â nm, we find considerably larger reconstruction periods (1.8â1.96Â nm) on incidentally flatter regions of nominal Au(1Â 1Â 9), Au(1Â 1Â 11), and Au(1Â 1Â 17) surfaces. The enlarged reconstruction period is attributed to the stress field on stepped surfaces. In agreement with previous studies we find a reconstruction free zone at the step edges.
Journal: Surface Science - Volume 603, Issue 4, 15 February 2009, Pages 670-675