Observation of incompressibility at ν=4/11 and ν=5/13

N. Samkharadze, I. Arnold, L. N. Pfeiffer, K. W. West, G. A. Csáthy

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34 Scopus citations

Abstract

The region of filling factors 1/3<ν<2/5 is predicted to support new types of fractional quantum Hall states with topological order different from that of the Laughlin-Jain or the Moore-Read states. Incompressibility is a necessary condition for the formation of such novel topological states. We find that at 6.9 mK incompressibility develops only at ν=4/11 and 5/13, while the states at ν=6/17 and 3/8 remain compressible. Our observations at ν=4/11 and 5/13 are first steps towards understanding emergent topological order in these fractional quantum Hall states.

Original languageEnglish (US)
Article number081109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number8
DOIs
StatePublished - Feb 23 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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