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

Neppl, Stefan; Ernstorfer, Ralph; Bothschafter, Elisabeth; Cavalieri, Adrian L.; Menzel, Dietrich; Barth , J. V.; Krausz, Ferenc; Kienberger , Reinhard; Feulner, P.

doi:10.1103/PhysRevLett.109.087401

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

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Neppl, Stefan
Attosecond Dynamics, Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Physikdepartment E20, Technische Universität München;

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Ernstorfer, Ralph
Physical Chemistry, Fritz Haber Institute, Max Planck Society;
Physikdepartment E11, Technische Universität München;

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Bothschafter, Elisabeth
Attosecond Dynamics, Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Physikdepartment E11, Technische Universität München;

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Menzel, Dietrich
Physikdepartment E20, Technische Universität München;
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Krausz, Ferenc
Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

Kienberger , Reinhard
Physikdepartment E11, Technische Universität München;
Attosecond Dynamics, Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

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http://dx.doi.org/10.1103/PhysRevLett.109.087401
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PhysRevLett.109.087401.pdf
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Citation

Neppl, S., Ernstorfer, R., Bothschafter, E., Cavalieri, A. L., Menzel, D., Barth, J. V., et al. (2012). Attosecond Time-Resolved Photoemission from Core and Valence States of Magnesium. Physical Review Letters, 109(8): 087401. doi:10.1103/PhysRevLett.109.087401.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-15A8-9

Abstract

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.