Journal Article

PUBDB-2024-01612

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Atomic-scale imaging of laser-driven electron dynamics in solids

Gorelova, D. (Corresponding author)Extern* ; Santra, R.CFEL*XFEL.EU*DESY*

2024
Springer Nature London

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Please use a persistent id in citations: doi:10.1038/s42005-024-01810-7  doi:10.3204/PUBDB-2024-01612

Abstract: Resolving laser-driven electron dynamics on their natural time and length scales is essential for understanding and controlling light-induced phenomena. Capabilities to reveal these dynamics are limited by challenges in interpreting wave mixing of a driving and a probe pulse, low energy resolution at ultrashort time scales and a lack of atomic-scale resolution by standard spectroscopic techniques. Here, we demonstrate how ultrafast x-ray diffraction can access fundamental information on laser-driven electronic motion in solids. We propose a method based on subcycle-resolved x-ray-optical wave mixing that allows for a straightforward reconstruction of key properties of strong-field-induced electron dynamics with atomic spatial resolution. Namely, this technique provides both phases and amplitudes of the spatial Fourier transform of optically-induced charge distributions, their temporal behavior, and the direction of the instantaneous microscopic optically-induced electron current flow. It captures the rich microscopic structures and symmetry features of laser-driven electronic charge and current density distributions.

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Contributing Institute(s):

1. FS-CFEL-3 (CFEL-DESYT)
2. CFEL-Theory (FS-CFEL-3)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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