Dispersion and Absorption of Longitudinal Electro-Kinetic Waves in Magnetized Ion-Implanted Semiconductor Plasmas

Abstract

The instability of longitudinal electro-kinetic wave that is propagating across the magnetic field B 0 in ion-implanted group-IV semiconductor sample consisting of non-drifting electrons, holes, and negatively charged colloids is investigated. Using hydrodynamic approach, a compact dispersion relation D(ω, k) is derived for the same. The propagation and amplification characteristics of the wave in collision dominated regime are studied numerically in detail for slow and fast modes. Results show that the presence of transverse magnetic field is responsible for the modification of the existing wave spectra of the slow electro-kinetic branch. In case of fast electro-kinetic wave, the presence of magnetic field is found responsible for excitation and amplification of a new mode. It is also found that the magnetic field is responsible for the conversion of two existing aperiodic modes into periodic ones. These novel periodic modes are found to be counter-propagating in nature.

Wave instabilities of longitudinal electro‐kinetic waves in ion implanted semiconductor plasmas

“…Whereas, in case of fast electro-kinetic wave, the presence of magnetic field is found responsible for excitation and amplification of an additional new mode [12].…”

Drift Modified Longitudinal Electrokinetic Mode in Colloids Laden Semiconductor Quantum Plasmas

“…It may very safely be assumed that the presence of implanted charged colloids can strongly influence the host semiconductor medium and therefore the various properties well studied in dusty plasma can be revisited in this newly thought complex plasma medium in semiconductors. In this way, the presence of colloids in addition to mobile charge carriers already present in semiconductors resembles the dusty gaseous plasma system, as revealed from the references [14][15][16][17].…”