Dynamical correlation effects on structure factor of spin-polarized two-dimensional electron gas

We report a theoretical study on static density structure factor S(q) of a spin-polarized two-dimensional electron gas over a wide range of electron number density rs. The electron correlations are treated within the dynamical version of the self-consistent mean-field theory of Singwi, Tosi, Land, a...

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Bibliographic Details
Main Authors: Singh, Gurvinder, Moudgil, R. K., Kumar, Krishan, Garg, Vinayak
Format: Conference Proceeding
Language:English
Subjects:
Computer simulation
COMPUTERIZED SIMULATION
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Density
ELECTRON CORRELATION
ELECTRON DENSITY
ELECTRON GAS
Electron spin
ELECTRONS
MEAN-FIELD THEORY
MONTE CARLO METHOD
Monte Carlo simulation
SPIN
SPIN ORIENTATION
Structure factor
STRUCTURE FACTORS
Theory
TWO-DIMENSIONAL CALCULATIONS
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Summary:We report a theoretical study on static density structure factor S(q) of a spin-polarized two-dimensional electron gas over a wide range of electron number density rs. The electron correlations are treated within the dynamical version of the self-consistent mean-field theory of Singwi, Tosi, Land, and Sjolander, the so-called qSTLS approach. The calculated S(q) exhibits almost perfect agreement with the quantum Monte Carlo simulation data at rs=1. However, the extent of agreement somewhat diminishes with increasing rs, particularly for q around 2kF. Seen in conjunction with the success of qSTLS theory in dealing with correlations in the unpolarized phase, our study suggests that the otherwise celebrated qSTLS theory is not that good in treating the like-spin correlations.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4917929