Hartree-Fock theory of Skyrmions in quantum Hall ferromagnets

H. Fertig, Luis Brey, R. Côté, A. H. MacDonald, A. Karlhede, S. L. Sondhi

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

We report on a study of the charged-Skyrmion or spin-texture excitations which occur in quantum Hall ferromagnets near odd Landau-level filling factors. Particle-hole symmetry is used to relate the spin-quantum numbers of charged particle and hole excitations and neutral particle-hole pair excitations. Hartree-Fock theory is used to provide quantitative estimates of the energies of these excitations and their dependence on Zeeman coupling strength, Landau-level quantum numbers, and the thicknesses of the two-dimensional electron layers. For the case of ν near three we suggest the possibility of first-order phase transitions with increasing Zeeman coupling strength from a many-Skyrmion state to one with many maximally spin-polarized quasiparticles.

Original languageEnglish (US)
Pages (from-to)10671-10680
Number of pages10
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume55
Issue number16
DOIs
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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