Title :
Effect of contacts on terahertz plasma resonances in two-dimensional electron systems
Author :
Satou, Akira ; Ryzhii, Victor ; Vagidov, Nizami ; Mitin, Vladimir ; Otsuji, Taiichi
Author_Institution :
Inf. Syst. & Technol. Center, Univ. of Aizu, Aizuwakamatsu
Abstract :
We study the effect of side contacts on plasma oscillations in two-dimensional (2D) electron systems by numerical simulation. Our model is based on the kinetic electron transport equation and the self-consistent Poisson equation. We find that the contacts absorb the energy of plasma oscillations excited in the 2D electron channel and consequently this effect can be a dominant damping mechanism, surpassing the damping due to the electron collisions. We estimate the damping rate caused by the contacts and discuss its dependence on the real contact injection properties and temperature.
Keywords :
Poisson equation; damping; plasma collision processes; plasma kinetic theory; plasma oscillations; plasma simulation; two-dimensional electron gas; 2D electron channel; damping; electron collisions; kinetic electron transport equation; numerical simulation; plasma oscillation energy; self-consistent Poisson equation; side contacts; terahertz plasma resonance; two-dimensional electron systems; Damping; Electrons; Kinetic theory; Numerical simulation; Plasma properties; Plasma simulation; Plasma temperature; Plasma transport processes; Poisson equations; Resonance;
Conference_Titel :
Simulation of Semiconductor Processes and Devices, 2008. SISPAD 2008. International Conference on
Conference_Location :
Hakone
Print_ISBN :
978-1-4244-1753-7
DOI :
10.1109/SISPAD.2008.4648271
