Dynamical Correlation Effects on Pair-correlation Functions of Spin Polarized Two-dimensional Electron Gas

摘要

We report a theoretical study on the spin-resolved pair-correlation functions g_(σσ)(r) of a two-dimensional electron gas having arbitrary spin polarization ζ by including the dynamics of exchange-correlations within the dynamical self-consistent mean-field theory of Hasegawa and Shimizu. The calculated g_(↑↑)(r), g_(↓↓)(r) and g↑↓(r) exhibit a nice agreement with the recent quantum Monte Carlo simulation data of Gori-Giorgi et al. However, the agreement for the minority spin correlation function g↓↓(r) decreases with increase in ζ and/or decrease in electron density. Nevertheless, the spin-summed correlation function remains close to the simulation data.