Phys. Rev. B 75, 153304 (2007) [4 pages]Tuning of the spin-orbit interaction in two-dimensional GaAs holes via strainReceived 12 February 2007; published 17 April 2007 We report direct measurements of the spin-orbit interaction-induced spin splitting in a modulation-doped GaAs two-dimensional hole system as a function of anisotropic, in-plane strain. The change in spin-subband densities reveals a remarkably strong dependence of the spin splitting on strain, with up to about 20% enhancement of the splitting upon the application of only about 2×10−4 strain. The results are in very good agreement with our numerical calculations of the strain-induced spin splitting. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.153304
DOI:
10.1103/PhysRevB.75.153304
PACS:
73.61.Ey, 72.20.Fr, 72.25.Dc
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