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 and that correspond to the hole densities of the two spin subbands and a peak, at frequency corresponding to the total hole density. In addition, the spectrum exhibits an anomalous peak at We also determined the effective masses of the two spin subbands by finding the inverse transform of the Fourier spectrum in the vicinity of and 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.
- Received 1 December 2003
DOI:https://doi.org/10.1103/PhysRevB.69.113311
©2004 American Physical Society