Could a new resistor design improve quantum metrology? This paper explores a measurement scheme designed to enhance the robustness of a zero-magnetic-field quantum anomalous Hall resistor, extending its operating range to higher currents. The scheme simultaneously injects current into two disconnected perimeters of a multi-terminal Corbino device, based on V0.1(Bi0.2Sb0.8)1.9Te3, to balance the electrochemical potential between the edges. This approach screens the electric field that drives backscattering, improving quantization stability at increased currents. This multi-terminal Corbino device is based on V0.1(Bi0.2Sb0.8)1.9Te3. This innovative approach could be applied to existing quantum resistance standards relying on the integer quantum Hall effect, enhancing the reliability and applicability of quantum resistance metrology in diverse settings. It enables more robust and precise quantum resistance measurements, advancing the field of metrology.
Published in Nature Electronics, this research aligns with the journal's focus on electronic devices and quantum technology. The development of a balanced quantum Hall resistor contributes to the journal's coverage of advancements in electronic metrology.