Lifetimes of image-potential states on Cu(100) and Ag(100) measured by femtosecond time-resolved two-photon photoemission

Authors
Shumay, IL Hofer, U Thomann, U Wallauer, W Fauster, T
Citation
Il. Shumay et al., Lifetimes of image-potential states on Cu(100) and Ag(100) measured by femtosecond time-resolved two-photon photoemission, PHYS REV B, 58(20), 1998, pp. 13974-13981
Citations number
27
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
58
Issue
20
Year of publication
1998
Pages
13974 - 13981
Database
ISI
SICI code
0163-1829(19981115)58:20<13974:LOISOC>2.0.ZU;2-3
Abstract
We report time-resolved studies of image-potential stales on Cu(100) and Ag (100). Femtosecond ultraviolet-pump and infrared-probe techniques combined with two-photon photoemission have been used to measure relaxation dynamics of n = 1, 2, and 3 image-potential states. We found the lifetimes of these states on Cu(100) at room temperature to be 40+/-6, 120+/-15, and 300+/-20 fs, respectively. The corresponding values for Ag(100) are 55+/-5, 160+/-1 0, and 360+/-15 fs. [S0163-1829(98)06643-0].