Quantum hall effect in a multi-valley two-dimensional electron system

M. Shayegan, E. P. De Poortere, O. Gunawan, Y. P. Shkolnikov, E. Tutuc, K. Vakili

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Two-dimensional electrons in an AIAs quantum well occupy multiple conduction-band minima at the X-points of the Brillouin zone. These valleys have large effective mass and g-factor compared to the standard GaAs electrons, and are highly anisotropic. With proper choice of well width and by applying symmetry-breaking strain in the plane, one can control the occupation of different valleys thus rendering a system with tuneable effective mass, g-factor, Fermi contour anisotropy, and valley degeneracy. Here we review some of the rich physics that this system has allowed us to explore.

Original languageEnglish (US)
Pages (from-to)1388-1397
Number of pages10
JournalInternational Journal of Modern Physics B
Issue number8-9
StatePublished - Apr 10 2007

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics


  • Heterostructures
  • Quantum hall effect


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