Magnetization dynamics has been routinely studied using the Landau-Lifshitz-Gilbert (LLG) equation. Although the LLG equation has a quantum mechanical origin and reflects the fact that magnetization and angular momentum of electrons are really the same thing, it has been used most of the time as a classical equation. The reason for it is that magnetism …
September 2018 archive
Sep 21
Electrical switching of the topological anomalous Hall effect in a non-collinear antiferromagnet above room temperature
First discovered by Edwin Hall in 1881, the anomalous Hall effect describes the transverse flow of electric currents under a longitudinal electric field in a ferromagnetic metal with its magnetization perpendicular to the measurement plane. By flipping the magnetization direction of the ferromagnet the transverse current also changes sign. The behavior looks similar to electrons …
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