Quantized Hall effect in the organic superconductor (TMTSF)2ClO4 revisited

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Abstract
We report Hall resistance measurements of the organic conductor (TMTSF)2ClO4 at low temperatures in fields up to 12 T. We have found that the Landau filling factor of the very stable semimetallic phase above 8 T is very likely to be n=1 instead of n=1/3 as inferred from previous investigations. A comparison between different samples shows that the possible current non-uniformity can strongly affect the experimental magnitude of the Hall resistance and thus leads to a wrong determination of the Landau filling factor
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