Femtosecond electron dynamics of image-potential states on clean and oxygen-covered Pt(111) -: art. no. 115420

被引：65

作者：

Link, S

Dürr, HA

Bihlmayer, G

Blügel, S

Eberhardt, W

Chulkov, EV

Silkin, VM

Echenique, PM

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

[2] DIPC, San Sebastian 20018, Basque Country, Spain

[3] Univ Basque Country, Fac Ciencias Quim, Dept Fis Mat, San Sebastian 20018, Spain

[4] EHU, UPV, CSIC, Ctr Mixto, San Sebastian 20018, Basque Country, Spain

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.63.115420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the lifetimes of image-potential states on the Pt(111) surface with time-resolved two-photon photoemission and first-principles calculations. Electrons populating the first two image-potential states decay into bulk states after 26+/-7 and 62+/-7 fs, respectively. This is in agreement with results of theoretical calculations. Oxygen adsorption reduces the image-potential state lifetimes by a factor of 2. This is caused by a strong change of the electronic structure near the Fermi level.

引用

页数：5

共 39 条

[1] Ultrafast spin-dependent electron dynamics in fcc Co [J].