Topological currents in black phosphorus with broken inversion symmetry
Topological currents in black phosphorus with broken inversion symmetry
We examine the nature of topological currents in black phosphorus when its inversion symmetry is deliberately broken. Here, the conduction and valence band edges are located at the $\Gamma$ point of the rectangular Brillouin zone, and they exhibit strong anisotropy along its two crystal axes. We will show below that …