Field-Modulated Anomalous Hall Conductivity and Planar Hall Effect in Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> Nanoflakes
S. Y. Yang, Jonathan Noky, Jacob Gayles, F. K. Dejene, Yan Sun, Mathias Dörr, Y. Skourski, Claudia Felser, Mazhar N. Ali, Enke Liu, S. Parkin
Abstract
nanoflakes, a magnetic WSM hosting stacked Kagome lattice. The reduced thickness modifies the magnetic properties of the nanoflake, resulting in a 15-time larger coercive field compared with the bulk, and correspondingly modifies the transport properties. A 22% enhancement of the intrinsic anomalous Hall conductivity (AHC), as compared to bulk material, was observed. A magnetic field-modulated AHC, which may be related to the changing Weyl point separation with magnetic field, was also found. Furthermore, we showed that the PHE in a hard magnetic WSM is a complex interplay between ferromagnetism, orbital magnetoresistance, and chiral anomaly. Our findings pave the way for a further understanding of exotic transport features in the burgeoning field of magnetic topological phases.