Electron spectra in crystal films

The dispersion law of electrons in film structures was derived by the method of two-time temperature dependent Green´s functions. In variance from unbounded structures, the electron energy spectra in films possesses a gap and the zone of electron energies is narrower and strictly discrete. The magnitude of the gap and the zone width depend on film thickness and increase quickly as a function of it. These results allow us to make a breakthrough in nanoelectronics.