Evidence for Local Interaction of Cs and CO on Ru(0001)

Autor: Zhang Han-Jie, Zhuang You-Yi, Bao Shi-Ning, He Pei-Mo, Xu Ya-Bo, Wu Yue, Zhang Xun-Sheng, Li Bo, Li Hai-Yang
Rok vydání: 2000
Předmět:
Zdroj: Chinese Physics Letters. 18:97-99
ISSN: 1741-3540
0256-307X
DOI: 10.1088/0256-307x/18/1/334
Popis: Ultra-violet photoemission spectroscopy measurements for CO adsorption on the (2×2)-Cs precovered Ru (0001) surface were performed. The Cs 5p (5p3/2) level (Cs state) locates at 11.3 eV in binding energy for the (2×2)-Cs overlayer on Ru (0001). Upon the CO adsorption, a new peak, which is associated with the Cs 5p state for the Cs adatoms influenced by the neighbouring CO adsorbed (the Cs+CO state), appears at the lower binding energy side of the Cs state. This new peak is at 10.8 eV for the CO saturation where the (2×2)-Cs+2CO compound layer is formed. This result gives clear evidence for local interaction of Cs and CO on the Ru (0001) surface. PACS: 73. 20. At, 82. 65. My, 68. 35. Bs
Databáze: OpenAIRE