AC magnetotransport in reentrant insulating phases of two-dimensional electrons near 1/5 and 1/3 Landau fillings

Yong P. Chen, Z. H. Wang, R. M. Lewis, P. D. Ye, L. W. Engel, D. C. Tsui, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

Abstract

We have measured high frequency magnetotransport of a high quality two-dimensional electron system (2DES) near the reentrant insulating phase (RIP) at Landau fillings (ν) between 1/5 and 2/9. The magnetoconductivity in the RIP has resonant behavior around 150 MHz, showing a peak at ν∼0.21. Our data support the interpretation of the RIP as due to some pinned electron solid. We have also investigated a narrowly confined 2DES recently found to have a RIP at 1/3<ν<1/2 and we have revealed features, not seen in DC transport, that suggest some intriguing interplay between the 1/3 FQHE and RIP.

Original languageEnglish (US)
Pages (from-to)3553-3556
Number of pages4
JournalInternational Journal of Modern Physics B
Volume18
Issue number27-29
DOIs
StatePublished - Nov 30 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

Keywords

  • 2DES
  • High-frequency transport
  • Reentrant insulating phase

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