Self-consistent Analysis of Doping Effect for Magnetic Ordering in Stacked-Kagome Weyl System
Abstract
We theoretically study the carrier doping effect for magnetism in a stacked-kagome system Co3Sn2S2 based on an effective model and the Hartree-Fock method. We show the electron filling and temperature dependences of the magnetic order parameter. The perpendicular ferromagnetic ordering is suppressed by hole doping, wheres undoped Co3Sn2S2 shows magnetic Weyl semimetal state. Additionally, in the electron-doped regime, we find a non-collinear antiferromagnetic ordering. Especially, in the non-collinear antiferromagnetic state, by considering a certain spin-orbit coupling, the finite orbital magnetization and the anomalous Hall conductivity are obtained.
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