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Area of Science:

  • Condensed Matter Physics
  • Quantum Hall Effect
  • Many-Body Physics

Background:

  • Composite fermion theory explains emergent particles in many-body systems.
  • Two-flux and four-flux composite fermions are well-established.
  • Limited data exists for six-flux composite fermions, with lacking topological protection.

Purpose of the Study:

  • To report evidence for the formation of six-flux composite fermions.
  • To identify a new quantized and gapped fractional quantum Hall state.
  • To expand the understanding of highly correlated topological phases.

Main Methods:

  • Experimental investigation of a fractional quantum Hall state at filling factor ν = 9/11.
  • Analysis of quantized Hall conductance and energy gaps.
  • Characterization of emergent particle formation.

Main Results:

  • Evidence for a quantized and gapped fractional quantum Hall state at ν = 9/11.
  • Association of this state with the formation of six-flux composite fermions.
  • Identification of the most intricate composite fermion observed to date.

Conclusions:

  • The study provides the first evidence for six-flux composite fermions.
  • This finding introduces a new member to the family of highly correlated topological phases.
  • The results open new possibilities for studying higher-order correlations in quantum Hall systems.