K. A. Brekhov, K. A. Grishunin, D. V. Afanas'ev, S. V. Semin, N. E. Sherstyuk, G. Kh. Kitaeva, E. D. Mishina, Th. Rasing, A. V. Kimel, “Photoinduced dynamics and femtosecond excitation of phonon modes in ferroelectric semiconductor Sn$_2$P$_2$S$_6$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2015, Volume 102, Issue 6,Pages 410

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Photoinduced dynamics and femtosecond excitation of phonon modes in ferroelectric semiconductor Sn$_2$P$_2$S$_6$

K. A. Brekhov^a, K. A. Grishunin^a, D. V. Afanas'ev^b, S. V. Semin^ab, N. E. Sherstyuk^a, G. Kh. Kitaeva^b, E. D. Mishina^a, Th. Rasing^c, A. V. Kimel^ca

^a Moscow State University of Information Technologies, Radio Engineering, and Electronics (MIREA), Moscow, 119454, Russia
^b Faculty of Physics, Moscow State University, Moscow, 119991, Russia
^c Radboud University Nijmegen, Institute for Molecules and Materials, Heijendaalseweg 135 6525 AJ Nijmegen, Netherlands

Abstract: The ultrafast dynamics of electrons and phonons excited by femtosecond light pulses in ferroelectric semiconductor Sn$_2$P$_2$S$_6$ is investigated using the optical pump-probe technique. It is demonstrated that a soft mode can be excited in this ferroelectric in the vicinity of the phase transition initiated by laser radiation.

Received: 14.07.2015
Revised: 28.07.2015

DOI: 10.7868/S0370274X15180101