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

Author(s): Liu, Yang; Hasdemir, S; Shayegan, Mansour; Pfeiffer, LN; West, KW; et al

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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.
Publication Date: Nov-2015
Electronic Publication Date: 30-Nov-2015
Citation: Liu, Yang, Hasdemir, S, Shayegan, M, Pfeiffer, LN, West, KW, Baldwin, KW. (2015). Unusual Landau level pinning and correlated quantum Hall effect in hole systems confined to wide GaAs quantum wells. Physical Review B, 92 (19), 10.1103/PhysRevB.92.195156
DOI: doi:10.1103/PhysRevB.92.195156
ISSN: 1098-0121
EISSN: 1550-235X
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review B
Version: Author's manuscript



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