Soft-mode driven dynamics in ferroelectrics -new insight from ultrafast terahertz and x-ray experiments
Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, 12489 Berlin, Germany
* Corresponding author: firstname.lastname@example.org
Published online: 16 April 2019
The coupled lattice and charge dynamics connected with soft-mode excitations are mapped by nonlinear terahertz spectroscopy and ultrafast x-ray diffraction. Sub-picometer lattice displacements induce electron relocations over 100 pm in polycrystaline aspirin and ferroelectric ammonium sulfate (AS). In AS, the electron motions induce a macroscopic polarization switching.
© The Authors, published by EDP Sciences, 2019
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