Collapse of the fractional quantum Hall state by a unidirectional periodic potential modulation

A. Endo, N. Shibata, Y. Iye

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We have investigated the effect of unidirectional periodic potential modulation on the fractional quantum Hall (FQH) states located within the filling factor range 1 < ν < 2. We find that odd-numerator FQH states are strongly suppressed, while the even-numerator ones are less affected or even enhanced, by the introduction of the modulation. In the picture of the composite fermions (CFs), the behaviors are equivalent to the suppression of the spin splitting of the CFs by the modulation. We discuss the origin of the suppression and the possible modulation-induced phase transition from the FQH state to the stripe state.

Original languageEnglish
Pages (from-to)1042-1045
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume42
Issue number4
DOIs
Publication statusPublished - 2010 Feb

Keywords

  • Composite fermions
  • Fractional quantum Hall effect
  • Lateral superlattice
  • Stripe phase

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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