Magnetoelastic coupling enabled tunability of magnon spin current generation in two-dimensional antiferromagnets

We theoretically investigate the magnetoelastic coupling (MEC) and its effect on magnon transport in two-dimensional antiferromagnets with a honeycomb lattice. MEC coefficients along magnetic exchange parameters spring constants are computed for monolayers of transition-metal trichalcogenides N\'eel order (${\text{MnPS}}_{3}$ ${\text{VPS}}_{3}$) zigzag (${\text{CrSiTe}}_{3}$, ${\text{NiPS}}_{3}$, ${\text{NiPSe}}_{3}$) by ab initio calculations. Using these parameters, we predict that spin-Nernst coefficient is significantly enhanced due to coupling. Our study shows although Dzyaloshinskii-Moriya interaction can produce materials, other mechanisms such as magnon-phonon should be taken into account. also demonstrate anisotropy an important factor control hybridization enhancement Berry curvature thus coefficient. results pave way toward gate tunable spin current generation magnets via electric field modulation anisotropy.