Commensurability oscillations of hole-flux composite fermions

D. Kamburov, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

We report the observation of commensurability oscillations of hole-flux composite fermions near a filling factor of ν=1/2 in a high-mobility two-dimensional hole system confined to a GaAs quantum well and subjected to a weak, strain-induced, unidirectional periodic potential modulation. The oscillations, which are consistent with ballistic transport of fully spin-polarized composite fermions in a weak periodic effective magnetic field, are surprisingly strong and exhibit up to third-order minima. We extract a ballistic mean-free path of about 0.1μm for the hole-flux composite fermions.

Original languageEnglish (US)
Article number236401
JournalPhysical review letters
Volume109
Issue number23
DOIs
StatePublished - Dec 4 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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