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

Journal Article · Wed Jun 24 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917929· OSTI ID:22490402

Singh, Gurvinder; Moudgil, R. K. ^[1]; Kumar, Krishan ^[2]; Garg, Vinayak ^[3]

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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)

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.

• OSTI ID: 22490402
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1665; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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