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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish
Article number405601
JournalJournal of Physics Condensed Matter
Volume24
Issue number40
DOIs
StatePublished - 10 Oct 2012

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