Shymanovich, Uladzimir; Nicoul, Matthieu; Lu, Wei; Tarasevitch, Alexander; Kammler, Martin; Horn-von Hoegen, Michael; von der Linde, Dietrich; Sokolowski-Tinten, Klaus:
Coherent acoustic and optical phonons in laser-excited solids studied by ultrafast time-resolved X-ray diffraction
2010
In: AIP Conference Proceedings, Band 1278 (2010), S. 558 - 566
Artikel/Aufsatz in Zeitschrift2010Physik
Fakultät für Physik » Experimentalphysik
Titel:
Coherent acoustic and optical phonons in laser-excited solids studied by ultrafast time-resolved X-ray diffraction
Autor(in):
Shymanovich, UladzimirLSF; Nicoul, MatthieuLSF; Lu, WeiLSF; Tarasevitch, AlexanderLSF; Kammler, MartinLSF; Horn-von Hoegen, MichaelLSF; von der Linde, DietrichLSF; Sokolowski-Tinten, KlausLSF
Erscheinungsjahr
2010
WWW URL

Abstract:

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 A1g 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