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Dielectric response effects in attosecond time-resolved streaked photoelectron spectra of metal surfaces

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Type
Preprint
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Submission Date
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DOI: 10.1103/PhysRevA.84.063403
Source
arXiv
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Abstract

The release of conduction-band electrons from a metal surface by a sub-femtosecond extreme ultraviolet (XUV) pulse, and their propagation through the solid, provokes a dielectric response in the solid that acts back on the photoelectron wave packet. We calculated the (wake) potential associated with this photoelectron self-interaction in terms of bulk and surface plasmon excitations and show that it induces a considerable, XUV-frequency-dependent temporal shift in laser-streaked XUV photoemission spectra, suggesting the observation of the ultrafast solid-state dielectric response in contemporary streaked photoemission experiments.

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