Researchers have identified a controllable nonlinear Hall effect (NLHE) in a quantum material that can convert alternating signals directly into direct current to power devices, potentially enabling battery-free operation.

The NLHE voltage varies with temperature, with the signal growing stronger or even reversing direction as temperature changes.

Importantly, the NLHE remains stable at room temperature, a key milestone for practical, real-world applications.

Potential applications include self-powered sensors, wearable devices, and ultra-fast components for future wireless networks, reducing or eliminating the need for batteries.

Understanding the internal dynamics of the NLHE enables the design of devices that exploit self-powered electronics and advanced wireless technologies.

The NLHE produces a voltage perpendicular to an applied alternating current without requiring a magnetic field, opening paths for ambient-energy-powered sensors and chips.

At low temperatures defects dominate NLHE behavior, while at higher temperatures lattice vibrations take over, revealing a new mechanism to control the effect.