Geometric Resonance of Composite Fermions Near the ν=1/2 Fractional Quantum Hall State

M. A. Mueed, D. Kamburov, S. Hasdemir, Mansour Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin

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Abstract

We observe geometric resonance features of composite fermions on the flanks of the even-denominator ν=1/2 fractional quantum Hall state in high-mobility two-dimensional electron and hole systems confined to wide GaAs quantum wells and subjected to a weak, strain-induced, unidirectional periodic potential modulation. The features provide a measure of how close to ν=1/2 the system stays single-component and supports a composite fermion Fermi sea before transitioning into a ν=1/2 fractional quantum Hall state, presumably, the two-component Ψ331 state.

Original languageEnglish (US)
Article number236406
JournalPhysical review letters
Volume114
Issue number23
DOIs
StatePublished - Jun 12 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Mueed, M. A., Kamburov, D., Hasdemir, S., Shayegan, M., Pfeiffer, L. N., West, K. W., & Baldwin, K. W. (2015). Geometric Resonance of Composite Fermions Near the ν=1/2 Fractional Quantum Hall State. Physical review letters, 114(23), [236406]. https://doi.org/10.1103/PhysRevLett.114.236406