Correlations in 2D electron gas at arbitrary temperature and spin polarizations

TL;DR

This paper investigates many-body effects in a 2D electron gas at various temperatures and spin polarizations using the Singwi-Tosi-Land-Sjolander theory, providing detailed calculations of structure factors and free energy.

Contribution

It extends previous studies by analyzing the combined effects of temperature and spin polarization on 2D electron gas properties using a comprehensive theoretical approach.

Findings

Spin polarization significantly affects correlation functions.

Finite temperature alters the structure factors and free energy.

Results align with earlier low-temperature or paramagnetic cases.

Abstract

Using the Singwi-Tosi-Land-Sjolander theory we have studied the many-body effects in the two-dimensional electron gas with arbitrary polarization at finite temperatures. We have calculated the structure factors, pair correlation functions, local-field factors and the Helmholtz free energy for different values of spin polarization, temperature and density parameter. We have shown that the spin polarization and finite temperature effects are remarkable and in the low temperature or paramagnetic case our results match closely with those obtained in earlier papers .