Hydrogen phonon spectra on transition metal surfaces: infrared reflection-absorption investigations of Mo(l00), W(100), and Pt(111)
作者： J.E. Reutt , Y.J. Chabal , S.B. Christman
DOI: 10.1016/0368-2048(87)87033-0
关键词: Hydrogen 、 Specular reflection 、 Infrared 、 Chemistry 、 Overtone 、 Dipole 、 Analytical chemistry 、 Infrared spectroscopy 、 Phonon 、 Molecular physics 、 Absorption spectroscopy
摘要: Abstract Hydrogen phonon spectra at saturation coverage are, reported for Mo(l00), W(100), and Pt(111). Surface infrared reflection absorption Spectroscopy enabled the evaluation of dipole contribution to each hydrogen over 800–4000 cm −1 region. A phenomenological line shape analysis, including effects broadband by substrate due free carrier excitation surface state absorption, permitted a quantitative comparison three surfaces' an investigation role electron-phonon interaction. We find anomalously broad symmetric stretch absorptions, exhibiting relative intensities W(100) > Mo(100) sharper Fano on assigned first overtone wag mode not observed in specular EELS, indicates coupling electronic states appropriate symmetry.
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