Changgan Zeng

Mar 18, 2024 | nature.com | Hanqi Pi |Lin Li |Rong Zhang |Hongming Weng |Changgan Zeng |Xianyang Lu

AbstractThe magnetic type-II Weyl semimetal (MWSM) Co3Sn2S2 has recently been found to host a variety of remarkable phenomena including surface Fermi-arcs, giant anomalous Hall effect, and negative flat band magnetism. However, the dynamic magnetic properties remain relatively unexplored. Here, we investigate the ultrafast spin dynamics of Co3Sn2S2 crystal using time-resolved magneto-optical Kerr effect and reflectivity spectroscopies.