Correlated electronic structure of the kagome metal MnSn

Sajid Ali, Research fellow, Monash

MnSn is a ferromagnetic material with inter-layer coupled magnetism and a high curie temperature TC. We study the bulk and monolayer form of MnSn.

We, hereby, use density functional theory plus dynamical mean-field theory (DFT + DMFT), to investigate the correlated electronic structures of MnSn in the Ferromagnetic phase. Bulk MnSn is found to be a weakly correlated material and the effects of this weak correlation on the flat bands of MnSn are discussed in detail.

We study the tunability of these flat bands through material thinning and alloying with CoSn and FeSn. FexMn1xSn with x=0.333 is found to host flat band, spanning a large momentum space along Γ-Γ direction, lying at the fermi-level EF.

About the presenters

Sajid is a Research Fellow working with CI Nikhil Medhekar‘s group. Major investigations include applying advanced numerical methods to different nano-material systems including defects in 2D materials. At FLEET, he is working on a project related to the transport properties of 2D material systems.

His work fits within both the FLEET Research Theme 1, Topological Materials