Polycrystalline films of the non-toxic element bismuth exhibit a room-temperature surface nonlinear Hall effect, which could make devices based on topological quantum effects more practical.
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Belosevich, V., Ma, Q. Quantum nonlinear devices go green. Nat Electron 7, 189–190 (2024). https://doi.org/10.1038/s41928-024-01130-2
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DOI: https://doi.org/10.1038/s41928-024-01130-2
