We have studied the temperature dependence of the integer quantum Hall transitions in the molecular crystal (TMTSF)2PF6. We find that the transition width between the quantum Hall plateaus does not exhibit the universal power-law scaling behavior of the integer quantum Hall effect observed in semiconducting devices. Instead, the slope of the ρxy risers, dρxy/dB, and the (inverse) width of the ρxx peaks, (ΔB)−1, show a BCS-like energy gap temperature dependence. We discuss these results in terms of the field-induced spin-density wave gap and order parameter of the system.
@article{arxiv.cond-mat/9606212,
title = {Quantum Hall Transitions in (TMTSF)$_2$PF$_6$},
author = {S. Valfells and J. S. Brooks and Z. Wang and S. Takasaki and J. Yamada and H. Anzai and M. Tokumoto},
journal= {arXiv preprint arXiv:cond-mat/9606212},
year = {2009}
}