Spin splitting in GaAs (100) two-dimensional holes

B. Habib, E. Tutuc, S. Melinte, M. Shayegan, D. Wasserman, S. A. Lyon, R. Winkler

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We measured Shubnikov-de Haas (SdH) oscillations in GaAs (100) two-dimensional holes to determine the inversion asymmetry-induced spin splitting. The Fourier spectrum of the SdH oscillations contains two peaks, at frequencies f and f+, that correspond to the hole densities of the two spin subbands and a peak, at frequency ftot, corresponding to the total hole density. In addition, the spectrum exhibits an anomalous peak at ftot/2. We also determined the effective masses of the two spin subbands by finding the inverse transform of the Fourier spectrum in the vicinity of f and f+, and then analyzing the temperature dependence of the SdH oscillations for each subband. We discuss our results in light of self-consistent calculations and previous experiments.

Original languageAmerican English
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number11
StatePublished - Mar 24 2004

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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