Terahertz response of carbon nanotube transistors

Autor:	Kienle, Diego, Léonard, François
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	We present an approach for time-dependent quantum transport based on a self-consistent non-equilibrium Green function formalism. The technique is applied to a ballistic carbon nanotube transistor in the presence of a time harmonic signal at the gate. In the ON state the dynamic conductance exhibits plasmonic resonant peaks at terahertz frequencies. These vanish in the OFF state, and the dynamic conductance displays smooth oscillations, a signature of single particle quantum effects. We show that the nanotube kinetic inductance plays an essential role in the high-frequency behavior. Comment: 10 pages, 4 figures, accepted in Physical Review Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0906.2826 Zobrazit plný text záznamu View this record from Arxiv