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 SrIrO3 epitaxial films, with the minimum detectable power as low as ~300 nanowatts. Strikingly, the SrIrO3 rectifier is highly field-tunable and exhibits a strong in-plane field anisotropy, thus showing a unique advantage in broad-band 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 SrIrO3, it is 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 SrIrO3 rectifiers, unleashing the great application potential of centrosymmetric materials in harvesting and detecting ambient electromagnetic energy.
@article{arxiv.2502.16812,
title = {Room-temperature field-tunable radiofrequency rectification in epitaxial SrIrO3 films},
author = {Liang Zhou and Zongzheng Du and Jinhua Wang and Pingbo Chen and Bicong Ye and Tao Feng and Jiahao Yang and Zehao Xiao and Meng Yang and Junxue Li and Wenqing Zhang and Hai-zhou Lu and Hongtao He},
journal= {arXiv preprint arXiv:2502.16812},
year = {2025}
}