Parallel magnetic-field tuning of valley splitting in AlAs two-dimensional electrons

T. Gokmen, Medini Padmanabhan, O. Gunawan, Y. P. Shkolnikov, K. Vakili, E. P. De Poortere, M. Shayegan

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We demonstrate that, in a quasi-two-dimensional electron system confined to an AlAs quantum well and occupying two conduction-band minima (valleys), a parallel magnetic field can couple to the electrons' orbital motion and tune the energies of the two valleys by different amounts. The measured density imbalance between the two valleys, which is a measure of the valley susceptibility with respect to parallel magnetic field, is enhanced compared to the predictions of noninteracting calculations, reflecting the role of electron-electron interaction.

Original languageEnglish (US)
Article number233306
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number23
StatePublished - Dec 1 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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