2021/07/28 by Harish K. Singh, Ilias Samathrakis, Singh, Harish K. +5
Engineering · Materials Science · #Advanced Battery Materials and Technologies #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Materials Science (cond-mat.mtrl-sci) #Thermal Expansion and Ionic Conductivity
paper · pdf · doi:10.48550/arxiv.2107.13496
openalex publication_date 2021/07/28 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28
The anomalous Hall conductivity (AHC) and anomalous Nernst conductivity (ANC) are two prominent transport phenomena in ferromagnetic materials of a topological nature. Based on first-principles calculations, we evaluated the AHC and ANC of 35 cubic ferromagnetic antiperovskites (APVs) and observed giant AHC and ANC as large as 1128 S/cm and 6.27 AK-1m-1 for Co3LiN and Co3PtN, respectively. Detailed analysis reveals that the origin of giant ANC can be attributed to the occurrence of Weyl nodes near the Fermi energy, as demonstrated for Co3PtN. Interestingly, both the magnitude and sign of AHC and ANC can be tuned by changing the magnetization (M) directions, which could be applied to realize spin-caloritronics devices.