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arXiv · 1209.2756

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

Shun-Tsung Lo·Yi-Ting Wang·G Bohra·E Comfort·T-Y Lin·M-G Kang·G Strasser·J P Bird·C F Huang·Li-Hung Lin·J C Chen·C-T Liang
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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.

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Shun-Tsung Lo, Yi-Ting Wang, G Bohra, E Comfort, T-Y Lin, M-G Kang, G Strasser, J P Bird, C F Huang, Li-Hung Lin, J C Chen, C-T Liang. 2012-09-13. Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields. https://doi.org/10.1088/0953-8984/24/40/405601

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