Microscopic theory of fractional excitations in gapless quantum Hall states: semi-quantized quantum Hall states

  title={Microscopic theory of fractional excitations in gapless quantum Hall states: semi-quantized quantum Hall states},
  author={Ouguz Turker and Tobias Meng},
  journal={SciPost Physics},
We derive the low-energy theory of semi-quantized quantum Hall states, a recently observed class of gapless bilayer fractional quantum Hall states. Our theory shows these states to feature gapless quasiparticles of fractional charge coupled to an emergent Chern-Simons gauge field. These gapless quasiparticles can be understood as composites of electrons and Laughlin-like quasiparticles. We show that semi-quantized quantum Hall states exhibit perfect interlayer drag, host non-Fermi liquid… 

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