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Fano resonance in atomic-resolution spectroscopic imaging of solids

机译:固体原子分辨率光谱成像中的磁场共振

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摘要

We report direct evidence of Fano resonances in atomic-resolution imaging of a crystalline material using a focused electron beam. Spectroscopic images of DyScO_3 that are derived from the Fano resonance in the Dy-N_(4.5) spectrum can exhibit unexpected atomic-scale contrast, markedly different from nonresonant images. These effects are explained by our theoretical calculations of the inelastic and elastic scattering, which show excellent agreement with the experimental data. The results have significant implications for spectroscopic imaging of rare-earth elements at the atomic scale.
机译:我们报告了使用聚焦电子束的晶体材料的原子分辨率成像中的Fano共振的直接证据。从Dy-N_(4.5)光谱中的Fano共振得出的DyScO_3光谱图像可能会显示出意外的原子级对比度,这与非共振图像明显不同。这些影响可以通过我们对非弹性和弹性散射的理论计算来解释,这些计算与实验数据非常吻合。该结果对原子级稀土元素的光谱成像具有重要意义。

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  • 来源
    《Physical review》 |2012年第9期|p.094119.1-094119.7|共7页
  • 作者单位

    Monash Centre for Electron Microscopy & Department of Materials Engineering & ARC Centre of Excellence for Design in Light Metals, Monash University, Victoria 3800, Australia;

    Department of Physics, Cornell University, Ithaca, New York 14853, USA;

    School of Applied and Engineering Physics & Kavli Institute, Cornell University, Ithaca, New York 14853, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electron energy loss spectroscopy;

    机译:电子能量损失谱;

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