Hole-flux Composite Fermion Commensurability Oscillations

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

doi:10.1103/PhysRevLett.109.236401

Hole-flux Composite Fermion Commensurability Oscillations

Mesoscale and Nanoscale Physics 2015-06-11 v1

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

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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.

Keywords

composite fermions commensurability oscillations two-dimensional hole system filling factor GaAs quantum well ballistic mean-free-path periodic potential modulation

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@article{arxiv.1208.0650,
  title  = {Hole-flux Composite Fermion Commensurability Oscillations},
  author = {D. Kamburov and M. Shayegan and L. N. Pfeiffer and K. W. West and K. W. Baldwin},
  journal= {arXiv preprint arXiv:1208.0650},
  year   = {2015}
}

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5 pages, 3 figures

Hole-flux Composite Fermion Commensurability Oscillations

Abstract

Keywords

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