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arXiv · 2207.06488

Out-of-plane longitudinal sound velocity in SnS$_2$ determined via broadband time-domain Brillouin scattering

Meixin Cheng·Kostyantyn Pichugin·Andr\e' Maas·Marika Schleberger·Germ\a'n Sciaini
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Abstract

Here we report time-resolved broadband transient reflectivity measurements performed in a single crystal of SnS$_2$. We made use of time-domain Brillouin scattering and a broadband probe to measure the out-of-plane longitudinal sound velocity $v_L$ = (2950 $\pm$ 100) m s$^{-1}$, in this semiconducting two-dimensional transition 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 $\pm$ 3) GPa.

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Meixin Cheng, Kostyantyn Pichugin, Andr\e' Maas, Marika Schleberger, Germ\a'n Sciaini. 2022-06-30. Out-of-plane longitudinal sound velocity in SnS$_2$ determined via broadband time-domain Brillouin scattering. https://doi.org/10.1063/5.0103224

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