Optical determination of the spin polarization of a quantum Hall ferromagnet

M. J. Manfra, B. B. Goldberg, L. Pfeiffer, K. West

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Recent experimental and theoretical investigations have resulted in a shift in our understanding of the v = 1 quantum Hall state. There now exists a wealth of evidence that the excitation gap and the resulting quasi-particle spectrum at v = 1 are due predominately to the ferromagnetic many-body exchange interaction. A great variety of experimentally observed correlations at v = 1 cannot be incorporated into a perturbative expansion around the single-particle model, a scheme long thought to describe the integral quantum Hall effect (IQHE) at filling factor 1. Theorists now refer to the v = 1 state as the quantum Hall ferromagnet. In this paper, we review recent theoretical and experimental progress and detail our own optical investigations of the v = 1 quantum Hall regime.

Original languageEnglish (US)
Pages (from-to)28-35
Number of pages8
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1-4
StatePublished - Jan 19 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


  • Magneto-optics
  • Quantum Hall effect
  • Skyrmions


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