Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (05): 437-440.doi: 10.3866/PKU.WHXB20000512

• ARTICLE • Previous Articles     Next Articles

Investigation of CO-4a1 Orbital Symmetry on K/Ru(10ī0) by Synchrotron Rdiation Photoemission

Li Hai-Yang, Bao Shi-Ning, Yang Dong, He Pi-Mo, Xu Ya-Bo, Liu Feng-Qin, K.Yibulaxin, Qian Hai-Jie   

  1. Physics Department,Zhejiang University,Hangzhou 310027|Laboratory for Synchrotron Radiation,Institute of High Energy Physics,Academia Sinica,Beijing 100039
  • Received:1999-08-12 Revised:1999-11-25 Published:2000-05-15
  • Contact: Li Hai-Yang


In the ARUP spectra for CO adsorbed on the K/Ru(1010) surface two peaks are observed respectively at 7.8 eV and 11.2eV binding energies. The peak 11.2 eV BE represents the CO-4a1 (5σ), which is forbidden under s-polarized light. According to the selection rule, the result supports the sp2-rehybridized model under the strong influence of coadsorbed K atoms on Ru(1010) surface and shows the CO bridge adsorption at 〈1210〉 azimuth.

Key words: CO orbital, Polarized light UPS, sp2-rehybridized model