Electrostatic Surface Modes in Magnetized Quantum Electron-Hole Plasma
- 1 Plasma Physics Department, N.R.C., Egyptian Atomic Energy Authority, Cairo, Egypt
- 2 Physics Department, Faculty of Science, Ain-Shams University, Cairo, Egypt
Abstract
The excitation of electrostatic surface waves on a semibounded quantum plasma-vacuum interface parallel to an applied magnetic field with electron-hole degeneracy is investigated. The wave equations of the electrostatic potential and both of the perturbed electron and hole plasma densities have been solved analytically. By using quantum hydrodynamic (QHD) model and the Poisson’s equation with appropriate boundary conditions, the general dispersion relation of these surface modes has been obtained. It is also solved and studied numerically for different cases of plasmas (magnetized or unmagnetized, classical or quantum). We have found that the density ratio of hole-electron plasma plays essential role on the dispersion of the modes along the wavelength beside the quantum and magnetic field.
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