Experimental evidence for composite particles in the fractional quantum Hall effect

R. R. Du, D. C. Tsui, H. L. Stormer, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We have measured the temperature dependence of the transport coefficient ρxa at the lowest Landau level fractional quantum Hall effect filling factors v = ρ/(2p ± 1), up to ρ = 5, in a high-quality two-dimensional electron system. Our data establish that the gap energies separating the excitations from their quantum liquid ground states are linear with ΔB, the magnetic field deviation from exact half-filling. We interpret this linearity as evidence for Landau level quantization of composite particles and deduce the effective mass and the scattering times of the particles.

Original languageEnglish (US)
Pages (from-to)18-22
Number of pages5
JournalSurface Science
Issue number1-3
StatePublished - Mar 20 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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