Acousto-electric wave instability in ion-implanted semiconductor plasmas
School of Studies in Physics, Vikram University, Ujjain 456010, India
Corresponding author: a email@example.com
Revised: 25 February 2005
Published online: 21 June 2005
A comprehensive investigation of excitation of acousto-electric modes and novel properties introduced due to presence of negatively charged colloids in magnetized compensated piezoelectric semiconductor plasma is presented analytically. We derive a compact dispersion relation for the acousto-electric waves in colloids laden semiconductor plasma by employing multi-fluid balance equation. It is found that the presence of charged colloids not only modifies the wave spectrum but also alters the amplification characteristics even though colloidal particles, on account of their heavy masses, do not participate in wave propagation. The results of this investigation should be useful in understanding the characteristics of longitudinal acousto-electric wave in ion-implanted piezoelectric semiconductor plasmas whose main constituents are electrons, holes and negatively charged colloids, which are stationary in the background.
PACS: 72.50.+b – Acoustoelectric effects / 72.30.+q – High-frequency effects; plasma effects / 61.72.Ww – Doping and impurity implantation in other materials / 82.70.Dd – Colloids
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005