Development of quantum hall array resistance standards at NMIJ

Oe, Takehiko; Kaneko,; Urano, Chiharu; Itatani,; Ishii,; Kiryu,

doi:10.1109/cpem.2008.4574632

Cited by 9 publications

(12 citation statements)

References 3 publications

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“…Several integrated QHARS implementations were published (e.g. [5][6][7][8][9][10][11]), including a number by some of the authors [12][13][14][15]. QHARS in graphene [16][17][18], a material that allows to achieve QHE under relaxed experimental conditions [19], were also implemented.…”

Section: Introductionmentioning

confidence: 99%

Error modelling of quantum Hall array resistance standards

Marzano

Ortolano

et al. 2018

Metrologia

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Quantum Hall Array Resistance Standards (QHARSs) are integrated circuits composed of interconnected quantum Hall effect elements that allow the realization of virtually arbitrary resistance values. In recent years, techniques were presented to efficiently design QHARS networks. An open problem is that of the evaluation of the accuracy of a QHARS, which is affected by contact and wire resistances. In this work, we present a general and systematic procedure for the error modelling of QHARSs, which is based on modern circuit analysis techniques and Monte Carlo evaluation of the uncertainty. As a practical example, this method of analysis is applied to the characterization of a 1 MΩ QHARS developed by the National Metrology Institute of Japan. Software tools are provided to apply the procedure to other arrays.

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Section: Introductionmentioning

confidence: 99%

Error modelling of quantum Hall array resistance standards

Marzano

Ortolano

et al. 2018

Metrologia

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“…Quantization of graphene quantum Hall standards. Quantum Hall array resistance standards (QHARS) have been explored in the recent past, but were limited in the amount of current that could pass through the device before quantization breaks down [4][5][6][7] . At NIST, we developed SiC-graphene standards with thirteen quantum Hall arrays in parallel giving an equivalent resistance of R K /26, where R K is the von Klitzing constant, defined by R K = h/(e 2 ).…”

Section: Resultsmentioning

confidence: 99%

A macroscopic mass from quantum mechanics in an integrated approach

Seifert

Panna

et al. 2022

Commun Phys

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The revision of the International System of Units (SI) on May 20th, 2019, has enabled new improved experiments to consolidate and simplify mechanical and quantum electrical metrology. Here, we present the direct measurement between a macroscopic mass and two quantum standards in a single experiment, in which the current used to levitate a mass passes through a graphene quantum Hall standard. The Josephson effect voltage is compared directly to the resulting quantum Hall effect voltage. We demonstrate this measurement with the use of graphene quantum Hall arrays for scaling in resistance with improved uncertainty and higher current level.

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“…The standard uncertainties of the ratio and phase errors of the CT u ( x 1 ) ,u ( y 1 ) and CC u ( x 4 ) ,u ( y 4 ) are calibrated by the AC current ratio standard. The standard uncertainty of the resistance and phase angle of the reference standard AC resistor is evaluated at 1 kHz by an AC resistor standard that is related to the quantized Hall resistance standard . The effects derived from the difference between the calibration frequency of the standard AC resistor and the actual frequency of the system, for example, 1 kHz and 55 Hz, should be considered.…”

Section: Calibration Methodsmentioning

confidence: 99%

AC shunt calibration using a current‐bridge method and its validation

Kon

Yamada

2014

IEEJ Transactions Elec Engng

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An AC shunt calibration system using a current-bridge method is developed, and its measurement uncertainties are estimated. A comparison of the calibration results obtained using the current-bridge method with the results using DC resistance and AC-DC difference methods was performed to verify the system. These comparison results show that the current-bridge-based system performs well with small measurement uncertainties for both the AC resistance and phase angle of the AC shunts up to 1 kHz.

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Development of quantum hall array resistance standards at NMIJ

Cited by 9 publications

References 3 publications

Error modelling of quantum Hall array resistance standards

Error modelling of quantum Hall array resistance standards

A macroscopic mass from quantum mechanics in an integrated approach

AC shunt calibration using a current‐bridge method and its validation

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