The initial step of photocatalytic water oxidation reaction at the metal oxide/aqueous
interface involves intermediates formed by trap** photogenerated, valence band holes on …

Ultrashort soft and hard x-ray pulses are sensitive probes of structural dynamics on the
picometer length and femtosecond time scales of electronic and atomic motions. Recent …

Using ultrafast X-ray diffraction, we study the coherent picosecond lattice dynamics of
photoexcited thin films in the two limiting cases, where the photoinduced stress profile …

Using time-resolved x-ray diffraction, we demonstrate the manipulation of the picosecond
strain response of a metallic heterostructure consisting of a dysprosium (Dy) transducer and …

Engineering of phonons, that is, collective lattice vibrations in crystals, is essential for
manipulating physical properties of materials such as thermal transport, electron‐phonon …

Phonons are often regarded as delocalized quasiparticles with certain energy and
momentum. The anharmonic interaction of phonons determines macroscopic properties of …

We utilized transmission-type pump–probe technique to investigate coherent acoustic
phonons in the superlattices of perovskite oxides such as SrIrO 3/SrTiO 3 and SrRuO …

X-ray reflectivity measurements of femtosecond laser-induced transient gratings (TG) are
applied to demonstrate the spatiotemporal coherent control of thermally induced surface …

We report generation of ultra-broadband longitudinal acoustic coherent phonon
wavepackets in SrTiO 3 (STO) with frequency components extending throughout the first …

A benchmark experiment is reported that demonstrates the shortening of hard X-ray pulses
in a synchrotron-based optical pump–X-ray probe measurement. The pulse-shortening …