We uncover a nonlinear magnon transport mechanism in two-dimensional honeycomb antiferromagnets driven by pseudogauge fields induced by surface acoustic waves. Using semiclassical Boltzmann transport theory, we demonstrate that a first-order spin current emerges linearly with the strength of the Dzyaloshinskii-Moriya interaction, despite the magnon Berry curvature itself being Dzyaloshinskii-Moriya interaction independent, a result that reveals an unexpected dissipation-driven response. At second order, we show that the spin current is governed by the magnon Berry curvature dipole, establishing a direct analogy with the nonlinear anomalous Hall effect in electronic systems. Both contributions are found to be dissipative in nature, offering insight into symmetry-allowed spin transport beyond the linear response. Our findings identify a previously unexplored pathway for generating and controlling spin currents in antiferromagnets via dynamic strain fields, with potential implications for strain-engineered magnonic devices and low-power spintronics applications.

Close

PrevNext

View figure in article

• Magnons
• 2-dimensional systems
• Boltzmann theory
• Linear spin wave theory
• Spin wave theory
• Surface acoustic wave