Observation of a giant dielectric constant in the re-entrant insulating phase of two-dimensional electrons

Y. P. Li, D. C. Tsui, T. Sajoto, L. W. Engel, M. Santos, M. Shayegan

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

We have measured the radio frequency Reσxx and Imσxx of a high mobility two-dimensional electron system (2DES) and observed a giant dielectric constant (κxx > 1 × 104) in the reentrant insulating phase (RIP) around the 1 5 fractional quantum Hall liquid. Results from temperature and excitation-level studies provide new evidence for the Wigner crystal (WC) model of the RIP, where the WC is strongly pinned by residual impurities in close proximity to the 2DES.

Original languageEnglish (US)
Pages (from-to)619-623
Number of pages5
JournalSolid State Communications
Volume95
Issue number9
DOIs
StatePublished - Sep 1995

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • A. heterojunction
  • D. fractional quantum Hall effect
  • D. quantum localization

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