Direct time domain sampling of sub-THz coherent acoustic phonon spectra in SrTiO${}_3$ using ultrafast X-ray diffraction

Roman Shayduk, Marc Herzog, André Bojahr +8

We synthesize sub-THz longitudinal quasi-monochromatic acoustic phonons in a SrTiO${}_3$ single crystal using a SrRuO${}_3$/SrTiO${}_3$ superlattice as an optical-acoustic transducer. Th…