Femtosecond dynamics of adsorbate charge-transfer processes as probed by high-resolution core-level spectroscopy

被引：65

作者：

Keller, C ^{[3
]}

Stichler, M

Comelli, G

Esch, F

Lizzit, S

Menzel, D

Wurth, W

机构：

[1] INFM, Lab TASC, I-34012 Trieste, Italy

[2] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy

[3] Tech Univ Munchen, Phys Dept E20, D-85747 Garching, Germany

[4] Sincrotrone Trieste, I-34012 Trieste, Italy

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.57.11951

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

When adsorbate core-hole states are excited with photon bandwidths below their natural linewidths, the corresponding decay spectra exhibit a branching into two channels: a coherent resonant "Raman"-type channel and an incoherent "normal" Auger-type channel. Using adsorbed Ar atoms in situations of varied adsorbate-substrate coupling, we demonstrate charge-transfer times from as low as 1.5 fs up to above 70 fs for the Ar 4s resonance. We also show different dependences of these times on the energetics of the resonance relative to E-F and discuss possible reasons for these variations. [S0163-1829(98)09319-9].

引用

页码：11951 / 11954

页数：4

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