首页|The geometrical and temperature-dependent local field correction effects on the effective mass renormalization in a 2DEG
The geometrical and temperature-dependent local field correction effects on the effective mass renormalization in a 2DEG
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NSTL
Elsevier
The paper aims at providing new theoretical insights into geometrical and local field correction effects on the effective mass renormalization of interacting electrons in a two-dimensional electron gas, at finite temperature. For this purpose, the temperature-dependent dynamic dielectric function is studied within random phase approximation. Then, the short-range effects of exchange-correlation holes around electrons are employed in calculations through local field correction using Hubbard, finite-temperature Hubbard, and Singwi-Tosi-LandSjolander approximations. Finally, the effective mass renormalization is calculated utilizing the real part of the electron self-energy. The outcomes indicate that the effective mass renormalization is decreased with increasing of the thickness at all dimensionless electron densities within all approximations. Likewise, utilizing a local field correction will lead to reductions in effective mass renormalization at any temperature and dimensionless electron density.
2DEGEffective mass renormalizationRPAFinite temperatureLocal field correctionSTLS approximation2-DIMENSIONAL ELECTRON-GASENHANCEMENTSYSTEM
NSTL
Elsevier
