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Nonlinear Hall Effect
As the heart and with the tremendous applications of terahertz technology, photodetectors suffer from considerable drawbacks imposed by weak optical absorption, and inefficient charge‐separation mechanisms. In article number 2209557, Antonio Politano, Lin Wang, and co‐workers report the nonlinear Hall effect operating at terahertz frequencies within strong spin‐polarized topological...
The zero‐magnetic‐field nonlinear Hall effect (NLHE) refers to the second‐order transverse current induced by an applied alternating electric field; it indicates the topological properties of inversion‐symmetry‐breaking crystals. Despite several studies on the NLHE induced by the Berry‐curvature dipole in Weyl semimetals, the direct current conversion by rectification is limited to very low driving...
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