Using the self-consistent STLS approximation of Singwi et at. we have studied the electron correlations in quasi-two-dimensional gas, surrounded by semi-infinite insulating media, including the effect of image charges (EICH) for different layer thickness and electron densities. By numerical self-consistent calculations of the plasmon dispersion, pair correlation function, structure factor, local-field corrections and correlation energy we have shown that for a certain region of electron density and layer thickness it is necessary to include both the correlation effects and the EICH in calculating physical properties of quasi-two-dimensional systems with significant differences between dielectric constants of neighboring media. (C) 2003 Elsevier Science Ltd. All rights reserved. References: 17
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机译:使用 Singwi et at 的自洽 STLS 近似。我们研究了被半无限绝缘介质包围的准二维气体中的电子相关性,包括像电荷(EICH)对不同层厚度和电子密度的影响。通过对等离激元色散、对相关函数、结构因子、局域场校正和相关能量的数值自洽计算,表明对于电子密度和层厚的某个区域,在计算相邻介质介电常数差异显著的准二维体系的物理性质时,有必要同时考虑相关效应和EICH。(C) 2003 Elsevier Science Ltd.保留所有权利。[参考文献: 17]
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