Publication Details:
Journal or Publication Title:
Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Title:
Screened Potential by Electron Gas
Creator:
Soghmonyan, A. I. ; Mkhitaryan, S. A. ; Markosyan, J. P.
Subject:
Uncontrolled Keywords:
degenerate and nondegenerate ; Coulomb potential ; electron gas ; screening radius ; degenerate and nondegenerate electron gas
Coverage:
Abstract:
Donors and acceptors in semiconductors are charged impurities with a Coulomb potential and, therefore, are screened by free charge carriers – electrons. An analytical description of the oscillations of the screened external potential by the electron gas is considered in this paper. Using the inverse transformation of the Fourier component, the screened Coulomb Potential U(r) and the value of the screening radius rs for the degenerate and nondegenerate electron gas are found. The dependence of rs on potentials is also given. It is shown that the screening radius decreases with increasing the electron density.