Tuesday, August 4, 2015
Abstract-Tunable surface plasmon instability leading to emission of radiation
We propose a new approach for energy conversion from a dc electric field to tunable based on hybrid by combining two-dimensional (2D) crystalline layers and a thick conducting material with possible applications for chemical analysis, security scanning, medical (single-molecule) imaging, and telecommunications. The hybrid nano-structure may consist of a single or pair of sheets of silicene, or a 2D When an electric current is passed through a 2D layer, we discover that two low-energy plasmon branches exhibit a characteristic loop in their before they merge into an unstable region beyond a critical vector . This finite gives rise to a wavenumber cutoff in the emission of the induced and emission of (spiler). However, there is no for a single driven layer far from the conductor, and the of an isolated pair of 2D layers occurs without a wavenumber cutoff. The wavenumber cutoff is found to depend on the conductor electron density, layer separation, distances of layers from the conductor and the driving-current strength.