Spin Splitting in GaAs (100) Two-Dimensional Holes

Abstract

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 $f_{\mathrm{tot}}$, corresponding to the total hole density. In addition, the spectrum exhibits an anomalous peak at $f_{\mathrm{tot}}/2$. 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.

4 pages, 3 figures

References in corpus (5)

• The Effect of Spin Splitting on the Metallic Behavior of a Two-Dimensional System
• Aharonov-Bohm Oscillations with Spin: Evidence for Berry's Phase
• Anomalous magneto-oscillations in two-dimensional systems
• Anomalous magneto-oscillations and spin precession
• Spin-splitting in GaAs 2D holes

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