TY  - JOUR
A1  - Shayduk, Roman
A1  - Hallmann, Jörg
A1  - Rodriguez-Fernandez, Angel
A1  - Scholz, Markus
A1  - Lu, Wei
A1  - Bösenberg, Ulrike
A1  - Möller, Johannes
A1  - Zozulya, Alexey
A1  - Jiang, Man
A1  - Wegner, Ulrike
A1  - Secareanu, Radu-Costin
A1  - Palmer, Guido
A1  - Emons, Moritz
A1  - Lederer, Max
A1  - Volkov, Sergey
A1  - Lindfors-Vrejoiu, Ionela
A1  - Schick, Daniel
A1  - Herzog, Marc
A1  - Bargheer, Matias
A1  - Madsen, Anders
T1  - Femtosecond x-ray diffraction study of multi-THz coherent phonons in SrTiO3
JF  - Applied physics letters
N2  - We report generation of ultra-broadband longitudinal acoustic coherent phonon wavepackets in SrTiO3 (STO) with frequency components extending throughout the first Brillouin zone. The wavepackets are efficiently generated in STO using femtosecond infrared laser excitation of an atomically flat 1.6 nm-thick epitaxial SrRuO3 film. We use femtosecond x-ray diffraction at the European X-Ray Free Electron Laser Facility to study the dispersion and damping of phonon wavepackets. The experimentally determined damping constants for multi-THz frequency phonons compare favorably to the extrapolation of a simple ultrasound damping model over several orders of magnitude.
Y1  - 2022
U6  - https://doi.org/10.1063/5.0083256
SN  - 0003-6951
SN  - 1077-3118
VL  - 120
IS  - 20
PB  - AIP Publishing
CY  - Melville
ER  -