Researchers demonstrated a hard X-ray transient grating with about 10 nm period in SrTiO3, driving coherent acoustic phonons and yielding evidence of ballistic heat transport at the nanoscale.
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Nanoscale Ultrafast Lattice Modulation with Hard X-ray Free Electron Laser
Researchers demonstrated a hard X-ray transient grating with about 10 nm period in SrTiO3, driving coherent acoustic phonons and yielding evidence of ballistic heat transport at the nanoscale.