J. Phys. I France 1 (1991) 449-453
Quantized Hall effect in the organic superconductor (TMTSF) ClO revisitedW. Kang and D. Jérome
Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, France
(Received 21 December 1990, accepted 11 February 1991)
We report Hall resistance measurements of the organic conductor (TMTSF) 2ClO 4 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.
© Les Editions de Physique 1991