Topological Protection at ν=9/11 : A hallmark of flux-six composite fermions

ORAL

Abstract

Fractional quantum Hall states can be accounted for by the formation of composite fermions carrying two and four flux quanta. States due to six flux quanta were predicted early on. However, such states were not observed until recently. In this talk, I will describe experiments that resulted in the observation of the first fractional quantum Hall state due to six flux composite fermions. This fractional quantum Hall state which develops at the filling factor v=9/11, possesses one of the most intricate quantum correlations. We will provide two wavefunction constructions, both of which involve six flux composite fermions, that can account for this fractional quantum Hall state within the framework of the composite fermion theory.

*Measurements at Purdue were supported by the US Department of Energy Basic Energy Sciences Program under the award DE-SC0006671. The sample growth effort of L.N.P., K.W.W. and K.W.B. at Princeton University was supported by the Gordon and Betty Moore Foundation Grant no. GBMF 4420, and the National Science Foundation MRSEC Grant No. DMR-1420541.

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Presenters

  • Waseem Hussain

    • Purdue University

Authors

  • Waseem Hussain

    • Purdue University

  • Haoyun Huang

    • Purdue University

  • Sean A Myers

    • Purdue University

  • Loren N Pfeiffer

    • Princeton University

  • Kenneth W West

    • Princeton University

  • Kirk W Baldwin

    • Princeton University

  • Gabor A Csathy

    • Purdue University