Unusual Landau level pinning and correlated ν=1 quantum Hall effect in hole systems confined to wide GaAs quantum wells

Yang Liu, S. Hasdemir, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

In two-dimensional hole systems confined to wide GaAs quantum wells, where the heavy- and light-hole states are close in energy, we observe a very unusual crossing of the lowest two Landau levels as the sample is tilted in a magnetic field. At a magic tilt angle θ≃34 which surprisingly is independent of the well width or hole density, in a large filling factor range near ν=1, the lowest two levels are nearly degenerate as evidenced by the presence of two-component quantum Hall states. Remarkably, a quantum Hall state is seen at ν=1, consistent with a correlated Ψ111 state.

Original languageEnglish (US)
Article number195156
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number19
DOIs
StatePublished - Nov 30 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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