Spin nematic liquid crystal and scalar spin chirality in tetragonal lattice YbMnBi 2
The study investigated a spin nematic order and its coupling to field-induced scalar spin chirality (SSC) in YbMnBi2 and CaMnBi2. Experiments confirmed a dynamic spin nematic phase in YbMnBi2 around 400 K, linked to magnetic Yb3+ ions. This coupling between nematicity and SSC via an external magnetic field B enhances the anomalous Hall effect (AHE) and anomalous Nernst effect (ANE), proposing a new room-temperature spintronic mechanism.