标题： 室温下外场可调的射频整流效应在外延SrIrO3薄膜中 显示英文标题

标题： Room-temperature field-tunable radiofrequency rectification in epitaxial SrIrO3 films

摘要： 尽管在无线技术和便携设备方面取得了重大进展，但在高频和纳瓦级射频整流方面仍然存在挑战。 在本工作中，我们报告了在名义上中心对称的SrIrO3外延薄膜中，射频整流高达37 GHz，最小可检测功率低至约300纳瓦。 值得注意的是，SrIrO3整流器具有高度的场可调性，并表现出强烈的面内场各向异性，因此在宽带射频整流方面显示出独特优势。 整流效应可以持续到至少360 K，并表现出包括符号反转在内的敏感温度依赖性。 通过对SrIrO3非线性输运特性的系统研究，进一步揭示了射频整流起源于非线性霍尔效应，其中主要贡献来自场诱导的贝里曲率偶极子。 我们的工作展示了场可调SrIrO3整流器的优越性能，释放了中心对称材料在收集和检测环境电磁能量方面的巨大应用潜力。 显示英文摘要

摘要： 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.