Potential Energy Fluctuation in Quasi Two-Dimensional Electron Gas Due to External Ionized Impurities

• Authors: P. Kębliński
• Languages of publication: EN

Abstracts

EN

Two-dimensional electron gas separated from Coulomb centers by a spacer is considered. Electrons are treated semi classically in limit of weak fluctuation and T = 0. Two screening models, Thomas-Fermi and RPA, are in dependently used. The second moment of the potential energy distribution is calculated analytically as a function of the spacer width. The qualitative arguments for the Gaussian character of the distribution are given and the density of states for such a distribution is calculated.

Keywords

EN

73.20.Hb

Discipline

• 73.20.Hb: Impurity and defect levels; energy states of adsorbed species

• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 80
• Issue: 3
• Pages: 321-324

Dates

published

1991-09

Contributors

author

P. Kębliński

• Institute of Physics, Poljsh Academy of Science ,al. Lotników 32/46, 02-668 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.80.321