Femtosecond transfer dynamics of photogenerated electrons at a surface resonance of reconstructed InP(100) -: art. no. 067601

被引：28

作者：

Töben, L ^{[1
]}

Gundlach, L ^{[1
]}

Ernstorfer, R ^{[1
]}

Eichberger, R ^{[1
]}

Hannappel, T ^{[1
]}

Willig, F ^{[1
]}

Zeiser, A ^{[1
]}

Förstner, J ^{[1
]}

Knorr, A ^{[1
]}

Hahn, PH ^{[1
]}

Schmidt, WG ^{[1
]}

机构：

[1] Hahn Meitner Inst Berlin GmbH, Dynam Interfacial React SE 4, D-14109 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.94.067601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Time-dependent two-photon photoemission spectra are used to resolve the femtosecond dynamics of hot electrons at the energetically lowest surface resonance of reconstructed InP(100). Two different cases are studied, where electrons either are lifted into the surface resonance via a direct optical transition or are captured from bulk states. These data are the first of this kind recorded with a time resolution below 70 fs. The microscopic analysis shows that electron-phonon scattering is a major mechanism for electron transfer between surface and bulk states.

引用

页数：4

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