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.
Author: | Uladzimir Shymanovich, M. Nicoul, W. Lu, A. Tarasevitch, Martin KammlerORCiDGND, Michael Horn-von Hoegen, D. von der Linde, Klaus Sokolowski-Tinten, Claude Phipps |
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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 |