Nano Express
The intensive terahertz electroluminescence induced by Bloch oscillations in SiC natural superlattices
Author affiliations
A.F. Ioffe Physico-Technical Institute, 26 Politekhnicheskaya, St. Petersburg, 194021, Russia
Citation and License
Nanoscale Research Letters 2012, 7:560 doi:10.1186/1556-276X-7-560
Published: 9 October 2012Abstract
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.
