Probing the surface structure via the adsorbed hydrogen atoms - The case of Cu(410)
Probing the surface structure via the adsorbed hydrogen atoms - The case of Cu(410)
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通过吸附的氢原子探测表面结构 - 以 Cu(410) 为例
DOI：
10.1016/j.apsusc.2020.146433
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发表时间：
2020
影响因子：
6.7
通讯作者：
Seigi Mizuno and Michio Okada
中科院分区：
文献类型：
--
作者：
Jessiel Siaron Gueriba;Wilson Agerico Dino;Seigi Mizuno and Michio Okada
我们展示了如何确定（或至少定性地推断）表面原子相对于任意选择的参考的位移，从吸附的氢原子的振动频率的趋势。可辨别的位移可以小到0.1 μ m。作为一个测试结构，我们考虑的情况下，铜（4 1 0），这一直是有争议的，直到最近。任何轻微的（CA。0.1 Cu（4 1 0）表面原子相对于任意选择的参考结构的位移表现为相应的H-Cu（4 1 0）势能曲线的加宽或变窄。这表明，在这种情况下，以氢作为（选择的）吸附质，进行吸附质介导的表面分析的可能性。
We show how we could determine (or at least qualitatively deduce) the displacements of surface atoms with respect to an arbitrarily chosen reference, from the trends in the vibrational frequencies of adsorbed hydrogen atoms. The discernible displacements could be as small as 0.1 Å. As a test structure, we consider the case of Cu(4 1 0), which has remained contentious, until recently. Any slight (ca. 0.1 Å) displacement of Cu(4 1 0) surface atoms with respect to an arbitrarily chosen reference structure manifests as either a broadening or narrowing of the corresponding H-Cu(4 1 0) potential energy curve. This suggests the possibility of carrying out adsorbate mediated surface analysis, with hydrogen as the (chosen) adsorbate, in this case.