Fast atom diffraction from superstructures on a Fe110 surface.
Fast atom diffraction from superstructures on a Fe110 surface.
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Fe110 表面上层结构的快速原子衍射。
DOI：
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发表时间：
2009
影响因子：
8.6
通讯作者：
H. Winter
中科院分区：
文献类型：
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作者：
A. Schüller;M. Busch;S. Wethekam;H. Winter
能量从500 eV到几keV的快原子从覆盖有硫原子或氧原子的限定超结构的Fe（110）表面掠射散射。对于沿沿着低折射率方位角方向的散射，我们观察到散射射弹的角分布中定义的衍射图案。从这些模式的分析，我们得到了低指数轴向通道的宽度和跨这些通道的相互作用势的的宽度。这使我们能够估计吸附原子在Fe（110）表面上的位置。通过演示，吸附诱导的金属表面上的超结构，我们表明，快速原子衍射，首先观察到的绝缘体，可以应用于广泛的材料的表面结构的研究。
Fast atoms with energies from 500 eV up to several keV are grazingly scattered from a Fe(110) surface covered with defined superstructures of sulfur or oxygen atoms. For scattering along low index azimuthal directions, we observe defined diffraction patterns in the angular distributions for scattered projectiles. From the analysis of those patterns, we derive the widths of low indexed axial channels and the corrugation of the interaction potential across these channels. This allows us to estimate the positions of adsorbed atoms on the Fe(110) surface. By demonstration, for adsorbate induced superstructures on a metal surface, we show that fast atom diffraction, first observed for insulators, can be applied to studies on surface structures for a wide range of materials.