Key points are not available for this paper at this time.
A quantized Hall plateau of ₗₘ=3h{e^2}, accompanied by a minimum in ₗₗ, was observed at T<5 K in magnetotransport of high-mobility, two-dimensional electrons, when the lowest-energy, spin-polarized Landau level is 13 filled. The formation of a Wigner solid or charge-density-wave state with triangular symmetry is suggested as a possible explanation.
Tsui et al. (Mon,) studied this question.