Influence of Local Surface Potential on Kikuchi Envelope of High-Energy Electrons within a Reconstructed Surface Layer
Influence of Local Surface Potential on Kikuchi Envelope of High-Energy Electrons within a Reconstructed Surface Layer
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DOI：
10.7566/jpsj.86.114606
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发表时间：
2017-11-15
影响因子：
1.7
通讯作者：
Shigeta, Yukichi
中科院分区：
文献类型：
--
作者：
Hagiwara, Yuto;Shigeta, Yukichi
菊池图样是由电子的非弹性散射和动力学衍射的结果产生的，包含了关于表面的结构和元素信息。与表面波共振（SWR）相关的菊池包络被认为包括关于最顶表面的详细信息。利用动态衍射理论模拟了菊池斑。结果表明，模拟的图案与观察到的图案非常一致。模拟和观察到的图案之间的比较证实，菊池包络下的SWR的重建表面显示的局部表面电位的影响所形成的吸附物，其中的表面波内传播的表面重建层的厚度为0.2 nm。
The Kikuchi pattern, which is created by the result of inelastic scattering and dynamical diffraction of electrons, includes structural and elemental information about the surface. The Kikuchi envelope related to the surface wave resonance (SWR) is considered to include detailed information about the topmost surface. The Kikuchi pattern has been simulated based on dynamical diffraction theory. It is shown that the simulated pattern agrees with the observed pattern very well. Comparison between the simulated and observed patterns confirms that that the Kikuchi envelope under the SWR for the reconstructed surface shows the influence of the local surface potential formed by the adsorbate, where the surface wave propagates within the surface reconstructed layer with a thickness of 0.2 nm.