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Coherent acoustic and optical phonons in laser-excited solids studied by ultrafast time-resolved X-ray diffraction

  • We apply ultrafast time‐resolved X‐ray diffraction to directly study coherent acoustic and optical phonons in laser‐excited materials. In Au the ps acoustic response has been investigated with the particular goal to clarify the interplay of electronic and thermal pressure contributions. In Bi the extreme softening of the coherently excited A 1 g optical phonon presents strong indication that upon intense laser‐excitation the Peierls‐transition which determines the equilibrium structure of Bi can be reversed. In FeRh we studied the lattice response after a fast laser‐induced anti‐ferromagnetic to ferromagnetic phase transition.

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Author:Uladzimir Shymanovich, M. Nicoul, W. Lu, A. Tarasevitch, Martin KammlerORCiDGND, Michael Horn-von Hoegen, D. von der Linde, Klaus Sokolowski-Tinten, Claude Phipps
DOI:https://doi.org/10.1063/1.3507146
Parent Title (English):AIP Conference Proceedings
Publisher:AIP
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2010
Release Date:2022/11/25
Issue:1
Article Number:1278
First Page:558
Last Page:566
Institutes:Fakultät Angewandte Natur- und Kulturwissenschaften
Fakultät Angewandte Natur- und Kulturwissenschaften / Labor Nanoanalytik und Halbleiterchemie (Nanochem)
Publication:Externe Publikationen
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG