Anomalous hysteretic behavior induced by Landau level pinning
ORAL
Abstract
We studied two-dimensional electron systems confined in asymmetric wide GaAs quantum wells at high magnetic field with capacitance measurement method. Because of the interlayer Coulomb interaction, Landau levels from different subbands will be pinned together when they cross at Fermi energy, leading to a charge instability. Our capacitance measurement reveals hysteretic behavior and two split minima around q/3 states related to this phenomenon.
*We acknowledge support by the NSFC (Grant No. 92065104 and 12074010) for sample fabrication and measurement. This research is funded in part by the Gordon and Betty Moore Foundation's EPiQS Initiative, Grant GBMF9615 to L. N. Pfeiffer, and by the National Science Foundation MRSEC grant DMR 2011750 to Princeton University.
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Presenters
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Wenlu Lin
- Peking Univ