Direct comparison of fractional and integer quantized Hall resistance

@article{Ahlers2016DirectCO,
  title={Direct comparison of fractional and integer quantized Hall resistance},
  author={Franz-Josef Ahlers and Martin G{\"o}tz and Klaus Pierz},
  journal={Metrologia},
  year={2016},
  volume={54},
  pages={516 - 523}
}
We present precision measurements of the fractional quantized Hall effect, where the quantized resistance R[1/3] in the fractional quantum Hall state at filling factor 1/3 was compared with a quantized resistance R[2], represented by an integer quantum Hall state at filling factor 2. A cryogenic current comparator bridge capable of currents down to the nanoampere range was used to directly compare two resistance values of two GaAs-based devices located in two cryostats. A value of 1–(5.3  ±  6… 
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