ULTRAFAST CHARGE-TRANSFER TIMES OF CHEMISORBED SPECIES FROM AUGER RESONANT RAMAN STUDIES

Authors
KELLER C STICHLER M COMELLI G ESCH F LIZZIT S WURTH W MENZEL D
Citation
C. Keller et al., ULTRAFAST CHARGE-TRANSFER TIMES OF CHEMISORBED SPECIES FROM AUGER RESONANT RAMAN STUDIES, Physical review letters, 80(8), 1998, pp. 1774-1777
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
8
Year of publication
1998
Pages
1774 - 1777
Database
ISI
SICI code
0031-9007(1998)80:8<1774:UCTOCS>2.0.ZU;2-G
Abstract
We demonstrate that high resolution autoionization studies for core ex citations under Auger resonant Raman (ARR) conditions can be used to e xtract extremely fast charge transfer (CT) relaxation times for chemis orbed molecules on a metal surface. For the O 1s and C 1s bound resona nces 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; i.e., no CT occurs.