Thermal Hall effect of chiral spin fluctuations

Using a two-dimensional square lattice Heisenberg model with Rashba-type Dzyaloshinskii-Moriya interaction, we demonstrate that chiral spin fluctuations can give rise to thermal Hall effect in the absence of any static texture or momentum space topology. It is shown by means Monte Carlo and stochastic dynamics simulations response finite at elevated temperature outside linear wave regime consistent presence fluctuation-induced nontrivial Our result suggests high-fluctuation phases conventional magnonics may yet be promising area exploration for spin-based electronics.