Out-of-Plane Longitudinal Sound Speed Determination in GaS by Broadband Time-Domain Brillouin Scattering
Two-dimensional semiconducting gallium sulfide (GaS) has garnered notable interest for its distinct structural and optical properties, which position it as a promising candidate material for various applications ranging from photodetection and photovoltaics to nonlinear frequency conversion. In this work, we determined the out-of-plane longitudinal sound velocity, , via impulsive time-domain femtosecond broadband Brillouin scattering measurements performed on a single flake-like GaS crystal. We obtained a value (3140 ± 20) m/s, which yields an out-of-plane compressive elastic constant, <i>C</i> <sub>33</sub>= (38.1 ± 0.5) GPa.
Authors
- Kostyantyn Pichugin (ORCID: https://orcid.org/0000-0003-3580-2276)
- Germán Sciaini (ORCID: https://orcid.org/0000-0002-2120-3996)
- Watheq Al‐Basheer (ORCID: https://orcid.org/0000-0002-2100-9333)
- Sam Netzke
- Christian Viernes
- Ruofei Zheng (ORCID: https://orcid.org/0009-0009-3521-6286)
Institutions
- King Fahd University of Petroleum and Minerals (SA)
- University of Waterloo (CA)
Publication Details
- Journal
- ACS Omega
- Published
- 2024-11-21
- DOI
- https://doi.org/10.1021/acsomega.4c05738
- Citations
- 2
- Primary Topic
- Mechanical and Optical Resonators
- Type
- article
- Field-Weighted Citation Impact
- 0.68
Funders
- Ontario Research Foundation
- Canada Foundation for Innovation
- King Fahd University of Petroleum and Minerals
- Natural Sciences and Engineering Research Council of Canada