Magnetic-field-induced suppression of spontaneous spin-splitting of hole subbands

• The spin-splitting in the valence band in an InxGa1-xAs/InxGa1-xAsyP1-y quantum well is investigated theoretically using a 6 x 6 Luttinger-Kohn Hamiltonian. We compare the Landau levels in a perpendicular magnetic field with the corresponding results for the subband dispersion;. 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.

Nyckelord

spin splitting

Landau revels

quantum wells

hole subbands

Shubnikov-de Haas oscillations

inversion asymmetry

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)