 |
|
|
|
|
|
|
|
|
|
Abstract
The resonance lifetime and energy of an excited Cs-state on Cu(111)
M. Bauer, S. Pawlik, M. Aeschlimann
Phys. Rev. B. 55 (1997) 10040
Using time-resolved two-photon photoemission spectroscopy, we investigated the resonance lifetime and energy of an excited Cs-state on Cu(111) in the low-coverage case. We found a pronounced lifetime increase of up to 11 3fs on a copper surface covered with cesium as compared to a clean copper surface in the energy range of an excited electronic Cs-state in the spectrum. This result is in agreement with recent theoretical predictions of hybridization among excited atomic levels of alkali atoms near metal surfaces.
|
|
|
|
|
|
|
|
