A precise measurement of QHR at NIM [quantized Hall resistance] |
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| Authors: | Zhang Z Wang D Hu Z Zhen J He Q Qiao W Bliek L Hein G Kowalski W Ebeling KJ Bruus H |
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| Affiliation: | Nat. Inst. of Metrol., Beijing; |
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| Abstract: | Equipment for precise measurement of the quantized Hall resistance (QHR) at the National Institute of Metrology (NIM), Beijing, China, is described. The essential parts in this equipment are a resistance comparator of one-to-one ratio with a comparison uncertainty of 3×10-8 and two specially designed resistor networks used for determining of the ratio between 12906.4035 Ω of QHR at i=2 and 10 kΩ or 1 kΩ. The transfer procedure from QHR to 10 kΩ or 1 kΩ can be completed easily with this equipment by a few one-to-one comparisons with a total uncertainty of 5×10-8 |
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