Investigation The Effect of Local Field Correction and thickness on the Dielectric Function of the Two-Dimensional Electron Gas System

Document Type : Full length research Paper

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Abstract

Abstract
In this paper, by using the Hubbard local field correction and also the form factor, we study the short-range interaction and thickness effects on two-dimensional electron gas system and its effect on dielectric function. It is well known that at low electron densities, it is necessary to include short-range effects through Hubbard approximation. We show that while the dielectric function within RPA and Hubbard approximation behaves qualitatively similar, the effect of different approximations and also thickness is considerable.
Keywords: electron short-range interaction, Nanolayer, Hubbard approximation, dielectric function, two-dimensional electron gas.

Keywords: electron short-range interaction, Nanolayer, Hubbard approximation, dielectric function, two-dimensional electron gas.

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History

  • Receive Date: 29 August 2014
  • Revise Date: 04 January 2015
  • Accept Date: 24 January 2015

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