Attosecond Time-Resolved Photoemission from Core and Valence States of Magnesium

被引：119

作者：

Neppl, S. ^{[1
,2
]}

Ernstorfer, R. ^{[3
,4
]}

Bothschafter, E. M. ^{[2
,3
]}

Cavalieri, A. L. ^{[5
]}

Menzel, D. ^{[1
,4
]}

Barth, J. V. ^{[1
]}

Krausz, F. ^{[2
]}

Kienberger, R. ^{[2
,3
]}

Feulner, P. ^{[1
]}

机构：

[1] Tech Univ Munich, Phys Dept E20, D-85747 Garching, Germany

[2] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[3] Tech Univ Munich, Dept Phys E11, D-85747 Garching, Germany

[4] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[5] Univ Hamburg, Max Planck Res Dept Struct Dynam, Ctr Free Electron Laser Sci, D-22607 Hamburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 08期

关键词：

SURFACE;

D O I：

10.1103/PhysRevLett.109.087401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on laser-assisted attosecond photoemission from single-crystalline magnesium. In strong contrast to the previously investigated transition metal tungsten, photoelectron wave packets originating from the localized core level and delocalized valence-band states are launched simultaneously from the solid within the experimental uncertainty of 20 as. This phenomenon is shown to be compatible with a heuristic model based on free-particle-like propagation of the electron wave packets generated inside the crystal by the attosecond excitation pulse and their subsequent interaction with the assisting laser field at the metal-vacuum interface.

引用

页数：5

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