Out-of-plane longitudinal sound velocity in SnS2 determined via broadband time-domain Brillouin scattering

Here, we report time-resolved broadband transient reflectivity measurements performed in a single crystal of SnS2. We made use of time-domain Brillouin scattering and a broadband probe to measure the out-of-plane longitudinal sound velocity, υ L = ( 2950 ± 100 ) m s – 1, in this semiconducting two-d...

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Bibliographic Details
Published in:Journal of applied physics 2022-08, Vol.132 (7)
Main Authors: Cheng, Meixin, Pichugin, Kostyantyn, Maas, André, Schleberger, Marika, Sciaini, Germán
Format: Article
Language:English
Subjects:
Acoustic velocity
Brittle materials
Broadband
Elastic properties
Optical properties
Scattering
Single crystals
Time domain analysis
Tin disulfide
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Summary:Here, we report time-resolved broadband transient reflectivity measurements performed in a single crystal of SnS2. We made use of time-domain Brillouin scattering and a broadband probe to measure the out-of-plane longitudinal sound velocity, υ L = ( 2950 ± 100 ) m s – 1, in this semiconducting two-dimensional metal dichalcogenide. Our study illustrates the potential of this non-invasive all-optical pump–probe technique for the study of the elastic properties of transparent brittle materials and provides the value of the elastic constant c 33 = ( 39 ± 3 ) GPa.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0103224