Recent experiments have reported nonlinear signals in topological materials up to room temperature. Here we show that this response stems from extrinsic spin-orbit contributions to \textit{both} impurity and phonon scattering. While skew scattering dominates at low temperatures, the side jump contribution ∝τ/τβ, where τ, τβ are the momentum and skew scattering times respectively. Consequently side jump exhibits a weak temperature dependence and remains sizable at room temperature. Our results provide a roadmap for engineering nonlinear transport at ambient conditions.
@article{arxiv.2506.13869,
title = {Room-Temperature Disorder-Driven Nonlinear Transport in Topological Materials},
author = {Rhonald Burgos Atencia and Shanshan Liu and Kian Ping Loh and Dimitrie Culcer},
journal= {arXiv preprint arXiv:2506.13869},
year = {2025}
}