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arXiv · 1901.06847

Energy spectrum and optical absorption of superlattices under strong band inversion conditions

B. Laikhtman·S. Suchalkin·G. Belenky·M. Ermolaev
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Abstract

We show that in superlattices with a strong band inversion no hybridization gap exists. There are two points where the bands are crossing and the spectrum has a shape of Dirac cones. Due to the absence of the hybridization gap the optical absorption does not have a threshold and goes to zero gradually with the decrease of optical energy.

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B. Laikhtman, S. Suchalkin, G. Belenky, M. Ermolaev. 2019-01-21. Energy spectrum and optical absorption of superlattices under strong band inversion conditions. https://doi.org/10.1016/j.spmi.2019.03.001

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