Ultrafast Charge Transfer Times of Chemisorbed Species from Auger Resonant Raman Studies
Ultrafast Charge Transfer Times of Chemisorbed Species from Auger Resonant Raman Studies
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俄歇共振拉曼研究中化学吸附物质的超快电荷转移时间
DOI:
10.1103/physrevlett.80.1774
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发表时间:
1998
影响因子:
8.6
通讯作者:
D. Menzel
中科院分区:
文献类型:
--
作者:
C. Keller;M. Stichler;G. Comelli;F. Esch;S. Lizzit;W. Wurth;D. Menzel
We demonstrate that high resolution autoionization studies for core excitations under Auger resonant Raman (ARR) conditions can be used to extract extremely fast charge transfer (CT) relaxation times for chemisorbed molecules on a metal surface. For the O 1 s and C 1 s bound resonances of CO on Ru (0001), ARR behavior is almost completely suppressed; from its small remnant detectable by its linear dispersion with photon energy, CT times below 1 fs can be determined. For CO on a Xe spacer, only dispersive Raman-type decay is seen; ie, no CT occurs.