Abstract
The spin-splitting in the valence band in an In x Ga 1− x As/In x Ga 1− x As y P 1− y quantum well is investigated theoretically using a 6×6 Luttinger–Kohn Hamiltonian. We compare the Landau levels in a perpendicular magnetic field with the corresponding results for the subband dispersions. It is shown that the asymmetry of the quantum well has a very small impact on the Landau level splitting for B>1 T in sharp contrast to the subbands in the absence of a magnetic field. The significance of our findings on the interpretation of Shubnikov–de Haas experiments is discussed.
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