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Symmetry-engineered and electrically tunable in-plane anomalous Hall effect in oxide heterostructures.
Nature Communications · · Journal Article · Open access
Dai, Wang + more
Abstract ↗AI summary
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A symmetry-engineered in-plane anomalous Hall effect is realized in epitaxial CaRuO3/La2/3Ca1/3MnO3/CaRuO3 heterostructures on NdGaO3(110), showing square hysteresis linked to in-plane magnetization reversal.
- Why it matters: In-plane anomalous Hall control is limited because electric-field, Hall-current, and out-of-plane magnetization are orthogonal in thin films, blocking practical device tuning.
- What they did: The team uses CaRuO3-buffer-controlled mirror-symmetry breaking in the ferromagnetic La2/3Ca1/3MnO3 layer, then applies ionic liquid gating to dynamically reconfigure that symmetry.
- The result: Electrical modulation produces fully reversible ON/OFF switching of the in-plane anomalous Hall effect, enabling direct Hall readout of in-plane magnetization reversal and programmable planar Hall functionalities.
The findingWhy it mattersWhat they didThe result
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