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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(02) [February 2006] >
| Title: | Electro-kinetic wave spectrum in group-IV semiconductors: Effect of streaming carriers |
| Authors: | Ghosh, S
Thakur, Preeti |
| Keywords: | Electrostatic waves
Electrostatic oscillations
Plasma effects
Doping
Ion-implantation
Colloids (NCs) |
| Issue Date: | Feb-2006 |
| Publisher: | CSIR |
| IPC Code: | B82B |
| Abstract: | The implanted ions in a group-IV semiconductor agglomerate to
form nano-clusters (NCs) and some of them acquire negative charge which change
the balance between electron-hole densities in an otherwise compensated semiconductor.
An analytical study has been made on wave spectrum of electro-kinetic (EK)
waves propagating through such medium. Using multi-fluid analysis and Maxwell’s
equations, a linear dispersion relation for the EK wave in such medium has been
derived. This dispersion relation is used to study slow electro-kinetic wave
phenomena and resultant instabilities numerically. The drift velocities of
electrons and holes are found to be responsible for converting two aperiodic
modes into periodic ones. They are also found helpful in reducing the
absorption of all the four possible EK modes. It is found that choosing the
proper values of applied electric field and wave number one may optimize the
amplification coefficients of propagating modes. |
| Page(s): | 188-191 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(02) [February 2006]
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