Pt. Coleridge et al., PEAK VALUES OF RESISTIVITY IN HIGH-MOBILITY QUANTUM-HALL-EFFECT SAMPLES, Physical review. B, Condensed matter, 49(15), 1994, pp. 10798-10801
Shubnikov-de Haas oscillations have been studied, at low temperatures,
in a high-mobility quantum-Hall-effect sample. A linear increase with
increasing magnetic field of the peak values of resistance is observe
d and is explained quantitatively by a quantum diffusion model with pr
edominantly small-angle scattering. The results are inconsistent with
recent suggestions that the peak values of conductivity, between integ
er-quantum-Hall-effect plateaus, are e2/2h.