Generation of terahertz oscillations by supercooled in electric field superconductors. Preliminary results

We present a short review of the history and contemporary computer simulations of the work of a electronic device for generation of electric oscillation by negative differential conductivity of a supercooled below the critical temperature superconductor. The superconductor is cooled below its critical temperature at a small constant electric field and this applied external voltage keeps the superconductor in normal state. In order to simulate the device, we use the formerly derived explicit analytical expressions for the conductivity of nanostructured superconductors supercooled below the critical temperature in electric field. Numerical analysis intended to alleviate the development of a device reveal that the negative differential conductivity region of the current-voltage characteristic leads to excitation of electric oscillations. This gives a hint that a hybrid device of nanostructured superconductors will work in terahertz frequencies. The study of layered high-Tc superconductors and electromagnetic waves emitted from them in space vacuum would be an important task for the future space technology.