Abstract
AbstractThe influence of the structural phase transition on the electronic structure of Pb1−xGexTe near the band gap is investigated theoretically. It is shown that the absolute minimum of the conduction band and the absolute maximum of the valence band are shifted in the (111) plane of the Brillouin zone. The surfaces of constant energy develop from toroidal‐shaped ones near the band edge to a figure of revolution obtained from two intersecting ellipses for the usual carrier concentration of 1017 cm−3.
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