Evidence for a ν=5/2 fractional quantum Hall nematic state in parallel magnetic fields

Yang Liu, S. Hasdemir, M. Shayegan, L. N. Pfeiffer, K. W. West, K. W. Baldwin

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

We report magnetotransport measurements for the fractional quantum Hall state at filling factor ν= 5/2 as a function of applied parallel magnetic field (B||). As B|| is increased, the 5/2 state becomes increasingly anisotropic, with the in-plane resistance along the direction of B|| becoming more than 30 times larger than in the perpendicular direction. Despite the very large resistance anisotropy, the anisotropy ratio remains constant over a relatively large temperature range, yielding an energy gap which is the same for both directions. Our data are qualitatively consistent with a fractional quantum Hall nematic phase.

Original languageEnglish (US)
Article number035307
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume88
Issue number3
DOIs
StatePublished - Jul 15 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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