Piezospintronic effect in antiperovskite Mn$_3$GaN

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Abstract

Based on first-principles calculations, we investigated the topological transport properties of Mn$3$GaN with coplanar noncollinear magnetic structures. The intrinsic anomalous Hall conductivity (IAHC) displays a significant dependence with respect to the in-plane magnetization direction between the$\Gamma{5g}$and$\Gamma_{4g}$magnetic configurations, where large anomalous Nernst effect (ANE) can be induced by tailoring the magnetization direction. Moreover, we observed strong piezospintronic effect in Mn$_3$GaN, where large IAHC can be induced by moderate epitaxial strain. Symmetry analysis reveals that for both cases, the nonzero IAHC is originated from the spin-orbit coupling instead of the noncollinear magnetic configurations

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URL

https://arxiv.org/abs/1905.11798

PDF

https://arxiv.org/pdf/1905.11798