Non-reciprocal charge transport has gained significant attention due to its potential in exploring quantum symmetry and its promising applications. Traditionally, non-reciprocal transport has been observed in the longitudinal direction, with non-reciprocal resistance being a small fraction of the ohmic resistance. Here we report a transverse non-reciprocal transport phenomenon featuring a quadratic current–voltage characteristic and divergent non-reciprocity, termed the non-reciprocal Hall effect. This effect is observed in microscale Hall devices fabricated from platinum (Pt) deposited by a focused ion beam on silicon substrates. The transverse non-reciprocal Hall effect arises from the geometrically asymmetric scattering of textured Pt nanoparticles within the focused-ion-beam-deposited Pt structures. Notably, the non-reciprocal Hall effect generated in focused-ion-beam-deposited Pt electrodes can propagate to adjacent conductors such as Au and NbP through Hall current injection. Additionally, this pronounced non-reciprocal Hall effect facilitates broadband frequency mixing. These findings not only validate the non-reciprocal Hall effect concept but also open avenues for its application in terahertz communication, imaging and energy harvesting.

非互易电荷传输因其在探索量子对称性方面的潜力及其有前途的应用而受到广泛关注。传统上，在纵向上观察到非互易传输，非互易电阻只占欧姆电阻的一小部分。在这里，我们报告了一种横向非互易输运现象，该现象具有二次电流-电压特性和发散的非互易性，称为非互易霍尔效应。这种效应在由铂 （Pt） 制成的微型霍尔器件中观察到，铂 （Pt） 由聚焦离子束沉积在硅衬底上。横向非互易霍尔效应是由聚焦离子束沉积的 Pt 结构内织构 Pt 纳米颗粒的几何不对称散射引起的。值得注意的是，聚焦离子束沉积的 Pt 电极中产生的非互易霍尔效应可以通过霍尔电流注入传播到相邻的导体，例如 Au 和 NbP。此外，这种明显的非互易霍尔效应有助于宽带频率混频。这些发现不仅验证了非互易霍尔效应概念，而且为其在太赫兹通信、成像和能量收集中的应用开辟了道路。