Implementation of a graphene quantum Hall Kelvin bridge-on-a-chip for resistance calibrations

Metrologia
Martina MarzanoMassimo Ortolano

Abstract

The unique properties of the quantum Hall effect allow one to revisit traditional measurement circuits with a new flavour. In this paper we present the first realization of a quantum Hall Kelvin bridge for the calibration of standard resistors directly against the quantum Hall resistance. The bridge design is particularly simple and requires a minimal number of instruments. The implementation here proposed is based on the bridge-on-a-chip, an integrated circuit composed of three graphene quantum Hall elements and superconducting wiring. The accuracy achieved in the calibration of a 12 906Ω standard resistor is of a few parts in 108, at present mainly limited by the prototype device and the interferences in the current implementation, with the potential to achieve few parts in 109, which is the level of the systematic uncertainty of the quantum Hall Kelvin bridge itself.

References

Sep 8, 2015·Nature Nanotechnology·R Ribeiro-PalauF Schopfer
Jan 1, 2018·Metrologia·Mattias Kruskopf, Randolph E Elmquist
Jan 1, 2018·Communications Physics·Vishal PanchalRandolph E Elmquist
Jan 1, 2018·IEEE Transactions on Instrumentation and Measurement·Albert F RigosiRandolph E Elmquist
Jan 1, 2019·IEEE Transactions on Electron Devices·Mattias KruskopfRandolph E Elmquist
Jan 1, 2019·Metrologia·Mattias KruskopfRandolph E Elmquist
Jan 1, 2019·Semiconductor Science and Technology·Albert F Rigosi, Randolph E Elmquist

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