Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields |
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| Authors: | 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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| Affiliation: | Graduate Institute of Applied Physics, National Taiwan University, Taipei 106, Taiwan. |
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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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