Constructing a Large Variety of Dirac-Cone Materials in the   Bi${}_{1-x}$Sb${}_{x}$ Thin Film System
  We theoretically predict that a large variety of Dirac-cone materials can be constructed in Bi${}_{1-x}$Sb${}_{x}$ thin films, and we here show how to construct single-, bi- and tri- Dirac-cone materials with various amounts of wave vector anisotropy. These different types of Dirac cones can be of special interest to electronic devices design, quantum electrodynamics and other fields. 
Shuang Tang and Mildred S. Dresselhaus
cond-mat.mtrl-sci cond-mat.mes-hall