Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)

We use ultrafast X-ray pulses to characterize the lattice response of SrTiO(3) when driven by strong terahertz fields. We observe transient changes in the diffraction intensity with a delayed onset with respect to the driving field. Fourier analysis reveals two frequency components corresponding to...

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Detalles Bibliográficos
Autores principales: Kozina, M., van Driel, T., Chollet, M., Sato, T., Glownia, J. M., Wandel, S., Radovic, M., Staub, U., Hoffmann, M. C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Crystallographic Association 2017
Materias:
ARTICLES
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5415405/
https://www.ncbi.nlm.nih.gov/pubmed/28503632
http://dx.doi.org/10.1063/1.4983153
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author Kozina, M.
van Driel, T.
Chollet, M.
Sato, T.
Glownia, J. M.
Wandel, S.
Radovic, M.
Staub, U.
Hoffmann, M. C.
author_facet Kozina, M.
van Driel, T.
Chollet, M.
Sato, T.
Glownia, J. M.
Wandel, S.
Radovic, M.
Staub, U.
Hoffmann, M. C.
author_sort Kozina, M.
collection PubMed
description We use ultrafast X-ray pulses to characterize the lattice response of SrTiO(3) when driven by strong terahertz fields. We observe transient changes in the diffraction intensity with a delayed onset with respect to the driving field. Fourier analysis reveals two frequency components corresponding to the two lowest energy zone-center optical modes in SrTiO(3). The lower frequency mode exhibits clear softening as the temperature is decreased while the higher frequency mode shows slight temperature dependence.
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spelling pubmed-54154052017-05-12 Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3) Kozina, M. van Driel, T. Chollet, M. Sato, T. Glownia, J. M. Wandel, S. Radovic, M. Staub, U. Hoffmann, M. C. Struct Dyn ARTICLES We use ultrafast X-ray pulses to characterize the lattice response of SrTiO(3) when driven by strong terahertz fields. We observe transient changes in the diffraction intensity with a delayed onset with respect to the driving field. Fourier analysis reveals two frequency components corresponding to the two lowest energy zone-center optical modes in SrTiO(3). The lower frequency mode exhibits clear softening as the temperature is decreased while the higher frequency mode shows slight temperature dependence. American Crystallographic Association 2017-05-03 /pmc/articles/PMC5415405/ /pubmed/28503632 http://dx.doi.org/10.1063/1.4983153 Text en © 2017 Author(s). 2329-7778/2017/4(5)/054301/7 All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle ARTICLES
Kozina, M.
van Driel, T.
Chollet, M.
Sato, T.
Glownia, J. M.
Wandel, S.
Radovic, M.
Staub, U.
Hoffmann, M. C.
Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)
title Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)
title_full Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)
title_fullStr Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)
title_full_unstemmed Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)
title_short Ultrafast X-ray diffraction probe of terahertz field-driven soft mode dynamics in SrTiO(3)
title_sort ultrafast x-ray diffraction probe of terahertz field-driven soft mode dynamics in srtio(3)
topic ARTICLES
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5415405/
https://www.ncbi.nlm.nih.gov/pubmed/28503632
http://dx.doi.org/10.1063/1.4983153
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