# Title:Hole-flux Composite Fermion Commensurability Oscillations

Abstract: We report the observation of commensurability oscillations of hole-flux composite fermions near filling factor $\nu=1/2$ 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 0.2 $\mu$m for the hole-flux composite fermions.
 Comments: 5 pages, 3 figures Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Journal reference: Phys. Rev. Lett. 109, 236401 (2012) DOI: 10.1103/PhysRevLett.109.236401 Cite as: arXiv:1208.0650 [cond-mat.mes-hall] (or arXiv:1208.0650v1 [cond-mat.mes-hall] for this version)

## Submission history

From: Dobromir Kamburov [view email]
[v1] Fri, 3 Aug 2012 03:38:35 UTC (774 KB)
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