Angle-resolved photoemission study of the clean and hydrogen-covered Rh(111) surface.
Angle-resolved photoemission study of the clean and hydrogen-covered Rh(111) surface.
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清洁且氢覆盖的 Rh(111) 表面的角分辨光发射研究。
DOI：
10.1103/physrevb.49.4821
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Kevan
中科院分区：
文献类型：
--
作者：
Di;Dhar;Smith;Kevan
我们利用角分辨光发射技术确定了清洁和氢覆盖的Rh（111）表面上表面局域态的能带结构。考虑到铑中价电子较少，如果适当移动费米能级，我们观察到的几个能带与之前在Pt（111）上观察到的能带惊人地相似。在表面布里渊区K点附近的费米能级附近的表面带中，观察到与这种刚性带行为的偏差。我们还将我们的结果与现有的计算进行比较。我们发现这些通常提供了一个很好的匹配我们的结果，虽然更多的表面波段观察比计算。
We have determined the band structure for the surface-localized states on a clean and hydrogen-covered Rh (111) surface using angle-resolved photoemission. Several of our observed bands are strikingly similar to those observed previously on Pt (111) if the Fermi level is shifted appropriately given the fewer valence electrons in rhodium. A deviation from this rigid-band behavior is observed for surface bands in the vicinity of the Fermi level near the K point of the surface Brillouin zone. We also compare our results to existing calculations. We find that these generally provide a good match to our results, although more surface bands are observed than calculated.