- Letter
Room-temperature broad-band radiofrequency rectification in epitaxial films
Phys. Rev. B 112, L241106 – Published 4 December, 2025
DOI: https://doi.org/10.1103/v8q3-jqjs
Abstract
Although significant advancements have been made in wireless technologies and portable devices, it remains a challenge for high-frequency and nanowatt-level radiofrequency rectification. In this work, we report a pronounced radiofrequency rectification up to 37 GHz in nominally centrosymmetric epitaxial films, with the minimum detectable power as low as −15 dBm. Strikingly, the rectifier is highly field tunable and exhibits a strong in-plane field anisotropy, thus showing a unique advantage in broadband radiofrequency rectification. The rectification effect can persist up to at least 360 K and shows a sensitive temperature dependence including a sign inversion. By a systematic study of the nonlinear transport properties of , it's further revealed that the radiofrequency rectification originates from the nonlinear Hall effect with the dominant contribution from field-induced Berry curvature dipole. Our work demonstrates the superior performance of the field-tunable rectifiers, unleashing the great application potential of centrosymmetric materials in harvesting and detecting ambient electromagnetic energy.