Refine your search:     
Report No.

The Temperature dependence of Cu$$_{2}$$O formation on a Cu(110) surface with an energetic O$$_{2}$$ molecular beam

Hashinokuchi, Michihiro*; Yoshigoe, Akitaka ; Teraoka, Yuden; Okada, Michio*

We report a study of the surface temperature (Ts) dependence of Cu$$_{2}$$O formation on a Cu(110) surface induced by a hyperthermal O$$_{2}$$ molecular beam (HOMB), using X-ray photoemission spectroscopy in conjunction with synchrotron radiation. From the Ts dependence of the O uptake curves, the direct dissociative adsorption process mainly contributes to the formation of the p(2$$times$$1)-O structure with an O coverage of 0.5 ML for 2.2 eV HOMB incidence. On the other hand, the rate of oxidation at the coverage larger than 0.5 ML, particularly in Cu$$_{2}$$O formation, strongly depends on the Ts. Thicker Cu$$_{2}$$O islands were found in homogeneously at 400 and 500 K, suggesting the dominant role of the migration of Cu atoms in the Cu$$_{2}$$O formations on the Cu(110) surface.



- Accesses




Category:Physics, Condensed Matter



[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.