2014/06/04 by G. Y. Guo, Q. Niu, Naoto Nagaosa +1
Engineering · Physics and Astronomy · #Condensed matter physics #Electrical resistivity and conductivity #Hall effect #Magnetic properties of thin films #Molecular Junctions and Nanostructures #Nernst effect #Nernst equation #Physics #Quantum and electron transport phenomena #Quantum mechanics #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.89.214406
published as Phys. Rev. B 89 (2014) 214406 · Accepted for publication in the Physical Review B
arxiv created 2014/06/04 · openalex publication_date 2014/06/09 · arxiv updated 2014/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the anomalous Nernst effect (ANE) and anomalous Hall effect (AHE) in proximity-induced ferromagnetic palladium and platinum which is widely used in spintronics, within the Berry phase formalism based on the relativistic band-structure calculations. We find that both the anomalous Hall (\ensuremathσxyA) and Nernst (\ensuremathαxyA) conductivities can be related to the spin Hall conductivity (\ensuremathσxyS) and band exchange splitting (\ensuremathΔex) by relations \ensuremathσxyA=\ensuremathΔex\frace\ensuremathℏ\ensuremathσxyS(EF)^\ensuremath' and \ensuremathαxyA=\ensuremath-\frac\ensuremathπ23\frackB2T\ensuremathΔex\ensuremathℏ\ensuremathσxys(\ensuremathμ)^\ensuremath'\ensuremath', respectively. In particular, these relations would predict that the \ensuremathσxyA in the magnetized Pt (Pd) would be positive (negative) since the \ensuremathσxyS(EF)^\ensuremath' is positive (negative). Furthermore, both \ensuremathσxyA and \ensuremathαxyA are approximately proportional to the induced spin magnetic moment (ms) because the \ensuremathΔex is a linear function of ms. Using the reported ms in the magnetized Pt and Pd, we predict that the intrinsic anomalous Nernst conductivity (ANC) in the magnetic platinum and palladium would be gigantic, being up to ten times larger than, e.g., iron, while the intrinsic anomalous Hall conductivity (AHC) would also be significant.