Preliminary Investigations on Establishment of Quantum Standard for Resistance

Abstract

A measurement system for precise realization of quantum Hall resistance standard with GaAs heterostructures is described. A comparison with a standard Klitzing resistor is shown and discussed. The preliminary results indicate that the value of R_H,2 realized in Hall plateau (i=2) is very close to CIPM value. Thus the technique will offer a more reliable and precise calibration service through transfer standard. Further attempts to improve the measurements for precise determination of R_H are underway.

Indexing terms:

• Quantum Hall effect
• Heterostructure and resistance standard