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Title: 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 r{sub s}. 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 r{sub s}=1. However, the extent of agreement somewhat diminishes with increasing r{sub s}, particularly for q around 2k{sub F}. 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.
Authors:
;  [1] ;  [2] ;  [3]
  1. Department of Physics, Kurukshetra University, Kurukshetra -136119 (India)
  2. Department of Physics, S. D. College (Lahore), Ambala Cantt. -133001 (India)
  3. Department of Physics, Punjabi University, Patiala – 147002 (India)
Publication Date:
OSTI Identifier:
22490402
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPUTERIZED SIMULATION; ELECTRON CORRELATION; ELECTRON DENSITY; ELECTRON GAS; ELECTRONS; MEAN-FIELD THEORY; MONTE CARLO METHOD; SPIN; SPIN ORIENTATION; STRUCTURE FACTORS; TWO-DIMENSIONAL CALCULATIONS