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Title: | Kinetics of a phonon-mediated laser-driven structural phase transition in Sn2P2Se6 |
Authors: | Kubli, Martin Savoini, Matteo Abreu, Elsa Burganov, Bulat Lantz, Gabriel Huber, Lucas Neugebauer, Martin J. Boie, Larissa Esposito, Vincent Bothschafter, Elisabeth M. Parchenko, Sergii Grübel, Sebastian Porer, Michael Rittmann, Jochen Beaud, Paul Staub, Urs Yabashi, Makina Tanaka, Yoshikazu Katayama, Tetsuo Togashi, Tadashi Kohutych, Anton A. Vysochanskii, Yulian M. Johnson, Steven L. Когутич, Антон Антонович Височанський, Юліан Миронович |
Keywords: | structural dynamics, time-resolved diffraction, ferroelectricity, incommensurate structure, phase transition |
Issue Date: | 2019 |
Publisher: | MDPI AG |
Citation: | Martin Kubli, Matteo Savoini, Elsa Abreu, Bulat Burganov, Gabriel Lantz, Lucas Huber, Martin J. Neugebauer, Larissa Boie, Vincent Esposito, Elisabeth M. Bothschafter, Sergii Parchenko, Sebastian Grübel, Michael Porer, Jochen Rittmann, Paul Beaud, Urs Staub, Makina Yabashi, Yoshikazu Tanaka, Tetsuo Katayama, Tadashi Togashi, Anton A. Kohutych, Yulian M. Vysochanskii, Steven L. Johnson. Kinetics of a Phonon-Mediated Laser-Driven Structural Phase Transition in Sn2P2Se6. Appl. Sci. 2019, v. 9, N 3, 525-1 - 525-11. |
Abstract: | We investigate the structural dynamics of the incommensurately modulated phase of Sn2P2Se6 by means of time-resolved X-ray diffraction following excitation by an optical pump. Tracking the incommensurable distortion in the time domain enables us to identify the transport effects leading to a complete disappearance of the incommensurate phase over the course of 100 ns. These observations suggest that a thin surface layer of the high-temperature phase forms quickly after photo-excitation and then propagates into the material with a constant velocity of 3.7 m/s. Complementary static structural measurements reveal previously unreported higher-order satellite reflection in the incommensurate phase. These higher-order reflections are attributed to cubic vibrational terms in the Hamiltonian. |
Description: | DOI 10.3390/app9030525 |
Type: | Text |
Publication type: | Стаття |
URI: | https://dspace.uzhnu.edu.ua/jspui/handle/lib/59482 |
ISSN: | 2076-3417 |
Appears in Collections: | Наукові публікації кафедри фізики напівпровідників |
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File | Description | Size | Format | |
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Kinetics-of-a-phononmediated-laserdriven-structural-phase-transition-in-Snsub2subPsub2subSesub6subApplied-Sciences-Switzerland.pdf | 501.49 kB | Adobe PDF | View/Open |
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