The representation of the ohm using the quantum hall effect at IEN

Abstract

A method to measure the quantized Hall resistance (QHR) in terms of the Istituto Elettrotecnico Nazionale (IEN), Italy, reference standard is described. Measurements showing the independence of QHR from the experimental conditions are reported. A preliminary evaluation of the difference between Omega /sub IEN/ and the new quantum-Hall-based standard is given. >