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A Determination of the SI Value of QHR by the Cross-capacitor in NIM

Zhang Zhonghua;Wang Xiaochao;Wang Dengan;Li Xianjie; He Qing; Ruan Yongshun (National Institute of Metrology,100013 Beijing, China)  
The determination of the SI value of the Quantized Hall Resistance (QHR) is very important for further improvement of the accuracy of von Klitzing constant and the international adjustment of fundamental physical constants.The determination of the SI value of QHR by the cross-capacitor was completed in NIM in the spring of 1994. The SI value of QHR (i=1) was found to be RH = 25812. 8084(34)Ω with an uncertainty of 0.13ppm (1σ).
【CateGory Index】: TM934.16
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【Secondary References】
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1 WEN Hai-wan,WU Xian-qiu(Laboratory of Quantum Information Technology,School of Physics and TelecommunicationEngineering,South China Normal University,Guangzhou,Guangdong 510006,China);Application status of the fundamental physical constants in textbooks of college physics[J];College Physics;2009-11
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