Figure1

Figure 1. Advancements in the exploration of the nonlinear Hall response in various 2D systems. (A) Schematic of the measurement geometry of the second-order nonlinear Hall effect. (B and C) The nonlinear Hall response in 2D Weyl semimetals and 2D topological insulators with inherent symmetry breaking. (D and E) The nonlinear Hall response in heterostructures and moiré superlattices through structural engineering. (B) reprinted with permission^[30], 2024, CC BY license. (D) reprinted with permission^[27,31]. Copyright 2023, The American Association for the Advancement of Science and 2023, CC BY license. (E) reprinted with permission^[32,33], 2021, CC BY license and 2022, CC BY license.