ИСТИНА

Recently, researchers have shown an increased interest in fundamentally new quantum materials called topological insulators (TIs). The key feature of TIs is the presence of topologically protected surface states, the dispersion curve of which has the shape of a Dirac cone. This leads to zero eff ective mass and high mobility of the free carriers, which provides an opportunity to use TIs as a promising material for THz photoconductive antennas (PCAs) and other THz devices. Considering the PCA as a resonator and separating the contributions of the electrodes and the active layer to the emitted THz field, we calculate its theoretical THz field waveforms and spectra.