Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields

Abstract

Magneto-transport measurements are performed on two-dimensional GaAs electron systems to probe the quantum Hall (QH) effect at low magnetic fields. Oscillations following the Shubnikov-de Haas (SdH) formula are observed in the transition from the insulator to QH liquid when the observed almost temperature-independent Hall slope indicates insignificant interaction correction. Our study shows that the existence of SdH oscillations in such a transition can be understood based on the non-interacting model.

17 pages

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Cited by in corpus (1)

• Experimental evidence for direct insulator-quantum Hall transition in multi-layer graphene