A FT–IRAS study of the vibrational properties of CO adsorbed on Cu/Ru (001). I. The structural and electronic properties of Cu
Yazarlar (2)
Jan Paul
| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | The Journal of chemical physics | ||
| Makale Dili | – | Basım Tarihi | 03-1987 |
| Cilt / Sayı / Sayfa | 86 / 5 / 2990–2996 | DOI | – |
| Makale Linki | https://pubs.aip.org/aip/jcp/article-abstract/86/5/2990/93623 | ||
| UAK Araştırma Alanları |
Dedektör Teknolojisi
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| Özet |
| We have used high resolution vibrational spectroscopy (FTIR) and carbon monoxide as a molecular probe to investigate the structural and electronic properties of well annealed copper layers adsorbed on a Ru(001) substrate. Adsorption of CO on annealed Cu–Ru (001) surfaces (θCu<1) at 85 K results in occupation of both Ru and Cu sites which exhibit characteristic C–O stretching frequencies as a function of CO coverage. The latter also indicates formation of Cu islands for 0.25<θCu<1 and chemical modification of the copper film by the underlying Ru, which leads to increased Cu–CO backdonation. From IR line shapes of the C–O stretch from CO‐√3×√3‐R30° on Ru sites, domain sizes are estimated for the bare Ru patches. Weak chemical modification is still observed for a 3 ML thick Cu film, whereas a 8 ML thick film exhibits all properties of bulk Cu(111), i.e., a coverage dependent red shift (2077–2075 cm … |
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