k.p theory is a simple approach which is used to model the
band structure of semiconductors in a limited region of the Brillouin zone
(k-space).
III-V Semiconductors.
k.p theory is particularly well suited to modelling the
properties of semiconductor heterostructures such as superlattices. In its
simple form it uses an envelope function to describe the properties of the
conduction band, heavy and light hole bands and spin-orbit split band. We use
this method extensively to model a variety of systems, including structures
based on the InAs/GaSb system where there is an overlap between the conduction
band of the InAs and the valence band of the GaSb, which makes band mixing
effects very significant. An extensive technical description of the technique
and some typical results are provided in the document by Vaughan et al.
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