title: The intensive terahertz electroluminescence induced by Bloch oscillations in SiC natural superlattices.
abstract: : We report on efficient terahertz (THz) emission from high-electric-field-biased SiC structures with a natural superlattice at liquid helium temperatures. The emission spectrum demonstrates a single line, the maximum of which shifts linearly with increases in bias field. We attribute this emission to steady-state Bloch oscillations of electrons in the SiC natural superlattice. The properties of the THz emission agree fairly with the parameters of the Bloch oscillator regime, which have been proven by high-field electron transport studies of SiC structures with natural superlattices.
authors.affiliation: A,F, Ioffe Physico-Technical Institute, 26 Politekhnicheskaya, St, Petersburg, 194021, Russia. sankin@mail.ioffe.ru.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Sankin
authors.forename: Alexandr
authors.initials: A
authors.lastname: Andrianov
authors.forename: Alexey
authors.initials: A
authors.lastname: Petrov
authors.forename: Alexey
authors.initials: A
authors.lastname: Zakhar'in
authors.forename: Ala
authors.initials: A
authors.lastname: Lepneva
authors.forename: Pavel
authors.initials: P
authors.lastname: Shkrebiy