Large Photoelasticity in Topological Antiferromagnet Mn${}_3$Sn Studied by Coherent Acoustic Phonon

Yuchen Wang, Takuya Matsuda, Yuta Murotani +5

We investigate the role of ultrafast strain on the electronic and optical responses in topological antiferromagnet Mn${}_3$Sn thin films using near-infrared femtosecond pump-probe sp…