Researchers control quantum-geometric nonlinear Hall state in magnet using electric current
Scientists at Tohoku University and the Japan Atomic Energy Agency demonstrated electrical control of a unique quantum phenomenon in an antiferromagnet on November 4, 2026.
New method for signal processing
The team successfully manipulated the quantum-geometric nonlinear Hall state by exploiting its coupling with spin structure. This achievement allows for the creation of devices that perform nonlinear signal processing functions through electric fields. Such technology moves beyond standard Ohm's law where voltage and current usually remain proportional.
Breakthrough published in scientific journal
The findings were released in the journal Newton on November 4, 2026. Researchers utilized an electrically switchable chiral antiferromagnet to achieve this specific control mechanism. The work highlights how quantum geometry influences electronic states to produce unconventional voltage responses.
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