Significant tunable nonlinear Hall and wireless rectification effects at room temperature in semiconductor tellurium

https://phys.org/news/2024-09-tunable-nonlinear-hall-effect-room.html

"generates second-harmonic output up to 2.8 mV (at 300°K), without introducing external magnetic field, order of magnitude higher than previously... tellurium thin flakes work well, inherently breaking inversion symmetry... Hall voltage outputs modulated by external gate voltages.,, primarily driven by extrinsic scattering, with surface symmetry breaking of thin flake structure... replaced AC current with RF signals, realizing wireless RF stable rectified voltage output over a broad frequency range of 0.3 to 4.5 GHz"