Composition and strain effects on Raman vibrational modes of GeSn alloys with Sn contents up to 31 % grown by low-temperature molecular beam epitaxy. - Zhao, Haochen; Lin, Guangyang; Zhang, Yuying; Park, Suho; Hickey, Ryan; Zhama, Tuofu; Cui, Peng; Sourav, Sagar; Kolodzey, James; Zeng, Yuping (Optical Materials, 2024)