Felinskyi, S.G.; Korotkov, P.A.; Felinskyi, G.S.
(Semiconductor Physics Quantum Electronics & Optoelectronics, 2012)
Physical conditions for occurrence of the spectral bands with the negative
dielectric permittivity in nonmagnetic crystalline media in the terahertz waveband have
been studied in this work. It has been shown that damping ...