The quantum anomalous Hall effect holds promise for quantum resistance metrology, but has been limited to low operating currents. A measurement scheme that increases the effect’s operational current is now demonstrated — a scheme that could also be used more generally to improve the performance of existing primary quantum standards of resistance based on the conventional quantum Hall effect.
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This is a summary of: Fijalkowski, K. M. et al. A balanced quantum Hall resistor. Nat. Electron. https://doi.org/10.1038/s41928-024-01156-6 (2024).
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A voltage-balanced device for quantum resistance metrology. Nat Electron (2024). https://doi.org/10.1038/s41928-024-01168-2
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DOI: https://doi.org/10.1038/s41928-024-01168-2
