Tunable anomalous Hall and Nernst effects in MM'X compounds

TL;DR

This study uses first-principles calculations to explore how the anomalous Hall and Nernst effects in XMnP compounds can be tuned by changing magnetization directions, revealing potential for thermoelectric applications.

Contribution

It demonstrates the tunability of anomalous Hall and Nernst effects in XMnP compounds through magnetization orientation, providing insights for thermoelectric device engineering.

Findings

Significant variations in AHC and ANC with magnetization direction.

Nodal lines and small gap areas dominate contributions.

Whole Brillouin zone influences the effects.

Abstract

Based on first-principles calculations, the anomalous Hall (AHC) and anomalous Nernst conductivities (ANC) of the XMnP (X=Ti, Zr, Hf) compounds were evaluated, and the possibility to tailor such properties by changing the magnetization directions was also investigated. We observed that nodal lines and small gap areas consist the dominant contributions to AHC and ANC, where the significant variations in AHC and ANC when altering the magnetization direction originate from the whole Brillouin zone. Our studies gave a promising clue on engineering magnetic intermetallic compounds for tunable transverse thermoelectric applications.