Abstract
Magnetic semiconductors with an anomalous Hall conductivity σ xy ≠ 0 near the Fermi energy are expected to have a large anomalous Nernst coefficient N owing to the Seebeck term, which is the product of the Hall angle ratio and Seebeck coefficient. In this study, we examined the typical cases of ∣N∣ ≥ 20 μV K–1 in the ferrimagnetic phase of semiconducting van der Waals layers MnBi2Te4 using first-principles calculations. A large enhancement in ∣N∣ was obtained by the Seebeck term for a wide range of carrier concentrations. The present results motivate further studies on the anomalous Nernst effect in intrinsically or doped magnetic semiconductors.
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