From insulator to quantum Hall liquid at low magnetic fields
arXiv:cond-mat/0601490 · doi:10.1103/PhysRevB.78.113305
Abstract
We have performed low-temperature transport measurements on a GaAs two-dimensional electron system at low magnetic fields. Multiple temperature-independent points and accompanying oscillations are observed in the longitudinal resistivity between the low-field insulator and the quantum Hall (QH) liquid. Our results support the existence of an intermediate regime, where the amplitudes of magneto-oscillations can be well described by conventional Shubnikov-de Haas theory, between the low-field insulator and QH liquid.
Magneto-oscillations governed by Shubnikov-de Haas theory are observed between the low-field insulator and quantum Hall liquid
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