Zeeman splitting of interacting two-dimensional electrons with two effective masses

K. Vakili, E. Tutuc, M. Shayegan

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We have realized an AlAs two-dimensional electron system in which electrons occupy conduction-band valleys with different Fermi contours and effective masses. In the quantum Hall regime, we observe both resistivity spikes and persistent gaps at crossings between the Landau levels originating from these two valleys. From the positions of the spikes in tilted magnetic fields and measurements of the energy gaps away from the crossings, we find that, after occupation of the minority valley, the spin susceptibility drops rapidly, and the electrons possess a single interaction-enhanced g-factor, despite the dissimilarity of the two occupied valleys.

Original languageEnglish (US)
Pages (from-to)285-288
Number of pages4
JournalSolid State Communications
Volume140
Issue number6
DOIs
StatePublished - Nov 1 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • A. Quantum wells
  • D. Electron-electron interactions
  • D. Electronic transport
  • D. Quantum Hall effect

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