The electronic band structures of Bi1−xSbx thin films can be varied as a function of temperature, pressure, stoichiometry, film thickness and growth orientation. We here show how different anisotropic single-Dirac-cones can be constructed in a Bi1−xSbx thin film for different applications or research purposes. For predicting anisotropic single-Dirac-cones, we have developed an iterative-two-dimensional-two-band model to get a consistent inverse-effective-mass-tensor and band-gap, which can be used in a general two-dimensional system that has a non-parabolic dispersion relation as in a Bi1−xSbx thin film system.
@article{arxiv.1110.5391,
title = {Prediction of Anisotropic Single-Dirac-Cones in Bi${}_{1-x}$Sb${}_{x}$ Thin Films},
author = {Shuang Tang and Mildred S. Dresselhaus},
journal= {arXiv preprint arXiv:1110.5391},
year = {2015}
}