Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-11-29
Physica E 44 (2012) 797-802
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 3 figures, 1 table
Scientific paper
10.1016/j.physe.2011.12.003
We have developed a theory of the longitudinal $g$ factor of light holes in semiconductor quantum wells. It is shown that the absolute value of the light-hole $g$-factor can strongly exceed its value in the bulk and, moreover, the dependence of the Zeeman splitting on magnetic field becomes non-linear in relatively low fields. These effects are determined by the proximity of the ground light-hole subband, $lh1$, to the first excited heavy-hole subband, $hh2$, in GaAs/AlGaAs-type structures. The particular calculations are performed in the framework of Luttinger Hamiltonian taking into account both the magnetic field-induced mixing of $lh1$ and $hh2$ states and the mixing of these states at heterointerfaces, the latter caused by chemical bonds anisotropy. A theory of magneto-induced reflection and transmission of light through the quantum wells for the light-hole-to-electron absorption edge is also presented.
Durnev M. V.
Glazov M. M.
Ivchenko Eougenious L.
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