DYNAMICS OF ATOMIC ADSORBATES - HYDROGEN ON CU(111)

被引：48

作者：

LAMONT, CLA

PERSSON, BNJ

WILLIAMS, GP

机构：

[1] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, D-52425 JULICH, GERMANY

[2] BROOKHAVEN NATL LAB, NATL SYNCHROTRON LIGHT SOURCE DEPT, UPTON, NY 11973 USA

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 243卷 / 5-6期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/0009-2614(95)00814-K

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 ; 081704 ;

摘要：

We have measured the absolute changes induced in the far infrared reflectivity by H and D atoms adsorbed on Cu(lll). The strongest features in the spectra are the dipole forbidden parallel vibrational modes which give rise to anti-absorption peaks with an intensity almost 10 times higher than that of the dipole allowed perpendicular modes. The dynamics can be explained by excitation of electron-hole pairs in the substrate. The energy relaxation time of the parallel vibration is 1 ps, but the linewidth is larger by a factor of 10 probably due to lateral tunneling of the adsorbates and dephasing processes.

引用

页码：429 / 434

页数：6

共 37 条

[1] VIBRATIONAL-SPECTRA OF ATOMIC H AND D ON CU(110) - EVIDENCE FOR H QUANTUM DELOCALIZATION [J].