Experimental evidence of above-threshold photoemission in solids

被引：42

作者：

Banfi, F ^{[1
]}

Giannetti, C

Ferrini, G

Galimberti, G

Pagliara, S

Fausti, D

Parmigiani, F

机构：

[1] Univ Cattolica, Ist Nazl Fis Mat, I-25121 Brescia, Italy

[2] Univ Cattolica, Dipartimento Matemat & Fis, I-25121 Brescia, Italy

[3] Univ Pavia, Ist Nazl Fis Mat, I-27100 Pavia, Italy

[4] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.94.037601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nonlinear photoemission from a silver single crystal is investigated by femtosecond laser pulses in a perturbative regime. A clear observation of above-threshold photoemission in solids is reported for the first time. The ratio between the three-photon above-threshold and the two-photon Fermi edges is found to be 10(-4). This value constitutes the only available benchmark for theories aimed at understanding the mechanism responsible for above-threshold photoemission in solids.

引用

页数：4

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