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Unveiling the underdamped longitudinal soft mode in paraelectric KDP by ultrafast x-ray diffraction

Isabel Gonzalez-Vallejo, Azize Koç, Klaus Reimann, Michael Woerner, and Thomas Elsaesser

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Abstract

We present ultrafast x-ray diffraction experiments of the underdamped soft mode in paraelectric KDP. Charge density maps derived from the x-ray data reveal oscillatory electronic charge relocations over interatomic distances, much larger than the sub-picometer nuclear displacements, a hallmark of soft-mode behavior.

© 2022 The Author(s)

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More Like This
Underdamped longitudinal soft mode dynamics in KDP observed by ultrafast x-ray diffraction

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Th4A.34 International Conference on Ultrafast Phenomena (UP) 2022

Femtosecond x-ray powder diffraction on KDP

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QTuN1 Quantum Electronics and Laser Science Conference (CLEO:FS) 2011

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CFIE_13_1 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2013

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