Andreev terahertz radiation generators

TL;DR

This paper explores how edge channels with spin circuits in nanostructures can generate terahertz radiation through Andreev molecule mechanisms involving negative-U dipole centers.

Contribution

It introduces a novel mechanism for terahertz generation using edge channels with negative-U dipole centers in nanostructures.

Findings

Edge channels act as Andreev molecules for terahertz generation.

Negative-U dipole centers are crucial for the radiation process.

The properties of spin circuits influence terahertz emission efficiency.

Abstract

The electrical, magnetic and optical properties of edge channels consisting of spin circuits that contain single carriers in nanostructures of silicon, silicon carbide and cadmium fluoride are investigated. It is demonstrated that due to the presence of chains of negative-U dipole centers at the boundaries of the spin circuits, the latter are Andreev molecules for generating terahertz radiation.