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Published on: December 22, 2015
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Out-of-Plane Longitudinal Sound Speed Determination in GaS by Broadband Time-Domain Brillouin Scattering
Watheq Al-Basheer1,2, Christian Viernes3, Ruofei Zheng3
1Department of Physics, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
ACS Omega
|December 9, 2024
Summary
Researchers measured the sound velocity in two-dimensional gallium sulfide (GaS) using advanced techniques. This study determined the material
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid State Physics
Background:
- Two-dimensional (2D) gallium sulfide (GaS) exhibits unique structural and optical properties.
- These properties make GaS a promising material for applications in photodetection, photovoltaics, and nonlinear frequency conversion.
Purpose of the Study:
- To determine the out-of-plane longitudinal sound velocity of 2D GaS.
- To calculate the out-of-plane compressive elastic constant (C33) of 2D GaS.
Main Methods:
- Impulsive time-domain femtosecond broadband Brillouin scattering measurements.
- Experiments were conducted on a single flake-like GaS crystal.
Main Results:
- The out-of-plane longitudinal sound velocity was measured to be (3140 ± 20) m/s.
- The calculated out-of-plane compressive elastic constant (C33) is (38.1 ± 0.5) GPa.
Conclusions:
- The determined elastic properties provide crucial data for understanding 2D GaS.
- This research contributes to the characterization of GaS for advanced electronic and photonic applications.
