Discovery of a new type of fractional quantum Hall state associated with six-flux composite Fermions

ORAL

Abstract

The composite fermion theory has significantly advanced the understanding of many-body correlations in the fractional quantum Hall regime. While a large number of fractional quantum Hall states involving two-flux and four-flux composite fermions have been observed, a topologically protected ground state involving six-flux composite fermions has remained lacking. In this work, we provide evidence for the formation of a topological protected fractional quantum Hall state at filling factor nu=9/11, which we associate with the formation of six-flux composite fermions. Our discovery expands the family of fractional quantum Hall states with a new member characterized by higher-order correlations.

*We acknowledge insightful discussions with Jainendra Jain. Measurements at Purdue were supported by the US Department of Energy Basic Energy Sciences Program under the award DE-SC0006671. The Princeton University portion of this research is funded in part by the Gordon and Betty Moore Foundation's EPiQS Initiative, Grant GBMF9615.01 to Loren Pfeiffer.

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Publication: Huang, H., Hussain, W., Myers, S.A. et al. Evidence for Topological Protection Derived from Six-Flux Composite Fermions. Nat Commun 15, 1461 (2024).

Presenters

  • Haoyun Huang

    • Purdue University

Authors

  • Haoyun Huang

    • Purdue University

  • Waseem Hussain

    • 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