Precision measurement of the FQHE resistance at filling factor 1/3

A precision measurement of the fractional quantized Hall resistance in a high mobility two-dimensional electron system was carried out as a test of the universality of the quantum Hall effect. Our results indicate that the Hall resistance at filling factor nu=1/3 does not deviate from the theoretical value 3ldrh/e
²
within a relative uncertainty of plusmn3.3 parts in 10
⁸
(k=2).