Fig. 5: Anti-symmetric oscillations induced by coherent acoustic waves. | Nature Communications

Fig. 5: Anti-symmetric oscillations induced by coherent acoustic waves.

From: Ultrafast dynamics of ferroelectric polarization of NbOI2 captured with femtosecond electron diffraction

Fig. 5: Anti-symmetric oscillations induced by coherent acoustic waves.

a The diffraction intensity of the (\(\overline{1}12\)) and (\(1\overline{12}\)) orders. b The temporal evolution of the FWHM of \((4\overline{28})\) diffraction order along the polar axis. c A differential image showing the diffraction pattern taken at 25 ps delay time, subtracting the diffraction pattern taken before the arrival of the laser pulse. d, The Ewald sphere of the 90 keV electrons. A seesaw motion in the reciprocal lattice causes the antisymmetric modulation to the Bragg condition of a Friedel pair.

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