Research / 2020 / Article / Fig 2

Research Article

A Unified View of Topological Phase Transition in Band Theory

Figure 2

TPT in a trigonal lattice. The parameters used here are , , , , , , and at lattice constant . The color of dots represents the relative weight of and orbitals. (a) Energy gap and index versus average bond length . A TPT between a NI and a TI is clearly visible. (b) Band structure of the trigonal lattice at the TI phase.