Eur. Phys. J. B 79, 429-433 (2011)
https://doi.org/10.1140/epjb/e2011-10606-4

Spin polarization effect in 2D and Q2D electron gas

¹ Physics Department, Tarbiat Moallem University, Tehran, Iran
² Physics Department, Islamic Azad University, Qom Branch, Qom, Iran
³ Physical and Theoretical Chemistry, University of Saarland, 66123 Saarbrücken, Germany

Corresponding author: ^a m.molayem@mx.uni-saarland.de

Received: 5 August 2010
Revised: 11 January 2011
Published online: 9 February 2011

Abstract

We use the constructed spin-dependent static local field functions to calculate the plasmon dispersion of two dimensional spin polarized electron gas (2D SPEG) over a range of electron densities at arbitrarily spin polarization. We also investigate how the finite width of electron layer will affect the plasmon frequency and inverse static dielectric function of 2D SPEG. Our results show that the effect of finite thickness on plasmon dispersion and inverse dielectric function becomes considerable even at high densities in 2D SPEG.