Simulation of attosecond streaking of electrons emitted from a tungsten surface

Details Simulation of attosecond streaking of electrons emitted from a tungsten surface Simulation of attosecond streaking of electrons emitted from a tungsten surface

2009-04-03

arxiv.org/abs/0904.0579v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

First time-resolved photoemission experiments employing attosecond streaking of electrons emitted by an XUV pump pulse and probed by a few-cycle NIR pulse found a time delay of about 100 attoseconds between photoelectrons from the conduction band and those from the 4f core level of tungsten. We present a microscopic simulation of the emission time and energy spectra employing a classical transport theory. Emission spectra and streaking images are well reproduced. Different contributions to the delayed emission of core electrons are identified: larger emission depth, slowing down by inelastic scattering processes, and possibly, energy dependent deviations from the free-electron dispersion. We find delay times near the lower bound of the experimental data.

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