Detection of the frustrated rotation mode of CO on Cu(001) by very low energy photoelectron spectroscopy

被引：5

作者：

Arafune, R. ^{[1
]}

Hayashi, K.

Ueda, S.

Uehara, Y.

Ushioda, S.

机构：

[1] RIKEN, Photodynam Res Ctr, Sendai, Miyagi 9800845, Japan

[2] Tohoku Univ, Res Inst Elect Commun, Sendai, Miyagi 9808577, Japan

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 18期

关键词：

photoemission; inelastic scattering; molecular vibration; photoelectron spectroscopy; low index single crystal surface; copper; carbon monoxide;

D O I：

10.1016/j.susc.2006.01.058

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

We have measured the very low energy photoelectron spectra of the clean and CO covered Cu(001) surfaces at low temperature (15 K). A step at 34.5 rneV below the Fermi level appeared in the CO/Cu(001) spectra, while no structure was found at the same position in the clean Cu(001) spectrum. Furthermore, we have succeeded in measuring the spectral shift of the step to 33.2 meV below the Fermi level by isotopic substitution of the CO molecule. We have concluded that this step originates from the inelastic scattering of photoelectrons through excitation of the frustrated rotation mode of the CO molecule. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3536 / 3539

页数：4

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