Microwave resonances in low-filling insulating phases of two-dimensional electron and hole systems

L. W. Engel, C. C. Li, D. Shahar, D. C. Tsui, M. Shayegan

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The conductivity of the high magnetic field insulating phases of two-dimensional electron and hole systems (2DES and 2DHS) of sufficiently low disorder exhibits a resonance at microwave frequency. We present and compare results on this resonance in a moderate disorder 2DES and in a high quality 2DHS. The 2DES exhibits the resonance even though the high-B insulator is not reentrant around the 1/5 fractional quantum Hall effect. The resonance in the 2DHS is much sharper than that in the 2DES, and appears to be inconsistent with the standard model of a two-dimensional harmonic oscillator in a magnetic field.

Original languageEnglish (US)
Pages (from-to)111-115
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume1
Issue number1-4
DOIs
StatePublished - Jan 19 1997

All Science Journal Classification (ASJC) codes

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

Keywords

  • Microwave resonance
  • Pinning mode
  • Wigner crystal

Fingerprint Dive into the research topics of 'Microwave resonances in low-filling insulating phases of two-dimensional electron and hole systems'. Together they form a unique fingerprint.

  • Cite this