Title: Thermal Hall Effect of Magnons from Many-Body Skew Scattering Show Chinese title

Title: 多体偏散射的磁振热霍尔效应

Abstract: We present a theory of magnonic thermal Hall transport driven by many-body skew scattering. In field-polarized chiral magnets, the Dzyaloshinskii-Moriya interaction induces three-magnon interactions that violate time-reversal symmetry and interfere with the four-magnon scattering, thereby breaking microscopic detailed balance and causing thermal Hall currents. This mechanism operates without disorder or Berry curvature and is intrinsic to interacting spin systems. We argue that it can be as significant as the band-geometric anomalous velocity, highlighting the importance of magnon interactions in thermal Hall physics. Show Chinese abstract

Abstract: 我们提出了一种由多体偏斜散射驱动的磁振子热霍尔输运理论。在场极化手性磁体中，Dzyaloshinskii-Moriya相互作用诱导出破坏时间反演对称性的三磁振子相互作用，并干扰四磁振子散射，从而打破微观细致平衡并导致热霍尔电流。这一机制无需无序或贝里曲率，且本质上属于相互作用自旋系统。我们认为它的重要性可以与带几何异常速度相提并论，突显了磁振子相互作用在热霍尔物理中的重要性。