scholarly journals International Bureau of Weights and Measures

2020 ◽  
Author(s):  
Keyword(s):  
Weights And Measures ◽  
International Bureau

scholarly journals Quantum Hall devices for the primary resistance standard based on the GaAs/AlxGa1−x As heterostructure

2019 ◽  
Vol 33 (08) ◽  
pp. 1950057
Author(s):  
Xueshen Wang ◽  
Qing Zhong ◽  
Jinjin Li ◽  
Yuan Zhong ◽  
Mengke Zhao
Keyword(s):  
Quantum Hall ◽  
Relative Deviation ◽  
Primary Resistance ◽  
Current Comparator ◽  
Transfer Standard ◽  
Weights And Measures ◽  
International Bureau ◽  
Resistance Standard

Quantum Hall devices for primary resistance metrology based on the GaAs/Al[Formula: see text]Ga[Formula: see text]As heterostructure were fabricated and compared with the devices from international metrology organization International Bureau of Weights and Measures (BIPM) by calibrating the same 100 [Formula: see text] transfer standard resistor with a cryogenic current comparator. Relative deviation between NIM-made device NIM-C1 and BIPM-made device BIPM-1 was −4.49 parts in 109 with an uncertainty of 3.63 parts in 109 which indicated NIM-C1 satisfied the requirement for the primary resistance standard.

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