Figure6

Figure 6. Device applications of the nonlinear Hall effect span diverse fields, including probing topological transitions, developing strain sensors, and creating wireless radiofrequency rectifiers. (A) Schematic of the nonlinear Hall measurement. (B) Band structures of the K valley for two different interlayer potential values, with the overlaid color representing the Berry curvature of the corresponding flat bands. (C) The variation in the Berry curvature dipole as a function of energy E at two different Fermi energies. (D) A strain sensor leveraging the nonlinear Hall response. (E) Wireless radiofrequency rectifier via the nonlinear Hall response. (A-C) reprinted with permission^[113], 2022, CC BY license. (D) reprinted with permission^[133], Copyright 2020, The American Physical Society. Panel E reprinted with permission^[65], 2024, CC BY license.