Resonant photoemission of N2O on Ir(110)
Resonant photoemission of N2O on Ir(110)
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DOI：
10.1142/s0218625x04006323
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发表时间：
2004-08
影响因子：
1.1
通讯作者：
S. A. Carabineiro;F. Groot;L. Kjeldgaard;J. Rubensson;B. Nieuwenhuys
中科院分区：
文献类型：
--
作者：
S. A. Carabineiro;F. Groot;L. Kjeldgaard;J. Rubensson;B. Nieuwenhuys
用高分辨共振光电子能谱研究了N2 O在Ir（110）表面的吸附。所获得的结果表明，N2 O的分子吸附，沿着一些解离的证据。结果表明，在N_2O/Ir（110）体系的末端和中心氮能级处测得的氮光电发射谱与气相中的N_2O相当。相比之下，氧谱显示出与N2 O的气相氧谱几乎没有相似之处。在氮的共振光电子能谱中，人们只能发现具有恒定结合能峰的共振行为。与此相反，氧的共振光电子能谱显示出占主导地位的俄歇行为与峰在恒定的动能。这两个观察结果表明，氧键合到Ir表面。为了了解N2 O在金属表面上吸附行为的变化，需要系统地研究覆盖率和温度的函数，并与结构和组成不同的其他表面进行比较。（减）
The adsorption of N2O on Ir(110) was investigated with high-resolution resonant photoemission at 135 K. The results obtained show evidence of molecular adsorption of N2O, along with some dissociation. It is found that the nitrogen photoemission spectra measured at the terminal and central nitrogen energy positions of the N2O/Ir(110) system are equivalent to those of N2O in the gas phase. In contrast, the oxygen spectrum shows little resemblance to the gas phase oxygen spectrum of N2O. In the nitrogen resonant photoemission spectra one can only discover resonant behavior with constant binding energy peaks. In contrast, the oxygen resonant photoemission spectra shows dominantly Auger behavior with peaks at constant kinetic energies. Both observations reveal that the oxygen is bonded to the Ir surface. A systematic study as a function of coverage and temperature and a comparison with other surfaces differing in structure and composition is needed to understand the variations in the adsorption behavior of N2O On metal surfaces. (Less)