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, and C-T Liang
TL;DR
This study investigates the quantum Hall effect in 2D GaAs electron systems at low magnetic fields, demonstrating that Shubnikov-de Haas oscillations can be explained by a non-interacting model during the insulator to quantum Hall liquid transition.
Contribution
It provides experimental evidence that SdH oscillations at low magnetic fields can be understood without considering electron interactions.
Findings
SdH oscillations observed at low magnetic fields.
Hall slope remains temperature-independent, indicating negligible interaction effects.
The non-interacting model explains the transition phenomena.
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.