Study of a surface state in a Ag-Au superlattice gap.
Study of a surface state in a Ag-Au superlattice gap.
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DOI：
10.1103/physrevlett.68.3339
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发表时间：
1992-06
影响因子：
8.6
通讯作者：
Miller;Chiang
中科院分区：
文献类型：
--
作者：
Miller;Chiang
用角分辨光发射技术研究了Ag-Au（111）超晶格。在超晶格间隙内观察到肖克利型表面态。在一个超晶格周期内改变终止（表面）平面的位置，会导致这个表面状态在一半周期内穿过间隙，而在另一半周期内消失。这些观测结果与理论预测非常吻合。
Ag-Au(111) superlattices are examined with angle-resolved photoemission. A Shockley-type surface state is observed within a superlattice gap. Varying the location of the terminating (surface) plane within a superlattice period causes this surface state to move across the gap for one half of the period and to disappear for the other half of the period. These observations are in good agreement with theoretical predictions.