Tunable intraband optical conductivity and polarization-dependent epsilon-near-zero behavior in black phosphorus
Tunable intraband optical conductivity and polarization-dependent epsilon-near-zero behavior in black phosphorus
Black phosphorus (BP) offers considerable promise for infrared and visible photonics. Efficient tuning of the bandgap and higher subbands in BP by modulation of the Fermi level or application of vertical electric fields has been previously demonstrated, allowing electrical control of its above bandgap optical properties. Here, we report modulation …