Studies of Laser-Induced Phase Transitions and Soft Phonon Mode Dynamics in SrTiO3

Tai Chiang; Meng-Kai Lin; Ro-Ya Liu; Sergey Lazarev; Ivan Vartaniants; Martin Holt; Iwao Matsuda

doi:10.18957/rr.11.3.201

Section SACLA

Studies of Laser-Induced Phase Transitions and Soft Phonon Mode Dynamics in SrTiO₃

Tai Chiang, Meng-Kai Lin, Ro-Ya Liu, Sergey Lazarev, Ivan Vartaniants, Martin Holt, Iwao Matsuda

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Keywords: phase transitions, strontium titanate, soft phonon mode, quantum fluctuations, free electron lasers, 2017B8001, BL3

JOURNAL OPEN ACCESS

2023 Volume 11 Issue 3 Pages 201-204

DOI https://doi.org/10.18957/rr.11.3.201

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Abstract

　Dynamic effects associated with phase transitions represent a frontier area in condensed matter physics. For our pump-probe work at SACLA, we aim to explore the behavior of a model system, strontium titanate, which shows an antiferroelectric transition. The physics of interest include photon-electron-lattice coupling, coherent N-phonon excitations, lattice oscillations, transient soft mode dynamics, dephasing, and energy relaxation and dissipation.

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