Time-resolved lattice dynamics of magnetic kagome metal Fe3Sn2

We propose the room-temperature, ultrafast XRD experiment on the magnetic kagome metal, Fe3Sn2, to study its structural changes upon optical pumping. This compound is a magnetic Weyl semimetal that combines topologically non-trivial band structures and flat-band ferromagnetism, both arising from the underlying kagome network of the Fe atoms. Our previous optical pump-probe transient reflectivity investigations suggested a unique interplay between phonons and the electronic structure in this compound. Here, we seek to understand the underlying structural changes that govern ultrafast dynamics of Fe3Sn2.