2021/08/18 by N. Bazazzadeh, Nasim Bazazzadeh, M. Hamdi +9 · 1 citation
Materials Science · Physics and Astronomy · #2D Materials and Applications #Anisotropy #Coupling (piping) #Ferromagnetism #Magnet #Magnetic anisotropy #Magnetic field #Magnetic properties of thin films #Magnon #Permalloy #Spin (aerodynamics) #Topological Materials and Phenomena #Zigzag #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.104.l180402
arxiv created 2021/08/18 · openalex created_date 2021/08/30 · openalex publication_date 2021/11/01 · arxiv updated 2021/11/10 · openalex updated_date 2026/08/05
We theoretically investigate the magnetoelastic coupling (MEC) and its effect on magnon transport in two-dimensional antiferromagnets with a honeycomb lattice. MEC coefficients along with magnetic exchange parameters and spring constants are computed for monolayers of transition-metal trichalcogenides with N'eel magnetic order (MnPS3 and VPS3) and zigzag order (CrSiTe3, NiPS3, and NiPSe3) by ab initio calculations. Using these parameters, we predict that the spin-Nernst coefficient is significantly enhanced due to magnetoelastic coupling. Our study shows that although Dzyaloshinskii-Moriya interaction can produce spin-Nernst effect in these materials, other mechanisms such as magnon-phonon coupling should be taken into account. We also demonstrate that the magnetic anisotropy is an important factor for control of magnon-phonon hybridization and enhancement of the Berry curvature and thus the spin-Nernst coefficient. Our results pave the way toward gate tunable spin current generation in two-dimensional magnets by spin-Nernst effect via electric field modulation of MEC and anisotropy.