Dispersion of longitudinal plasmons for a quasi-two-dimensional electron gas

Plasmons of a two-dimensional electron gas in the presence of spin orbit interaction

Anisotropic plasmons in a two-dimensional electron gas with spin-orbit interaction

S. M. Badalyan,1,2,* A. Matos-Abiague,2 G. Vignale,3 and J. Fabian2 1Department of Radiophysics, Yerevan State University, 1 A. Manoukian Street, Yerevan 375025, Armenia 2Department of Physics, University of Regensburg, 93040 Regensburg, Germany 3Department of Physics and Astronomy, University of Missouri–Columbia, Columbia, Missouri 65211, USA Received 9 February 2009; revised manuscript recei...

Calculation of Quasi-one-dimensional Interacting Electron Gas Using the Hartree-Fock Method

In this paper, the Hartree-Fock method has been formulated to investigate some of the ground state properties of quasi-one-dimensional interacting electron gas in the presence of the magnetic field. The bare coulomb interaction between electrons has been assumed. For this system, we have also computed some of its thermodynamic and magnetic properties such as the energy, pressure, incompressibil...

Plasmons in spin-orbit coupled two-dimensional hole gas systems

We study the dynamical dielectric function of a two-dimensional hole gas, exemplified on [001] GaAs and InAs quantum wells, within the Luttinger model extended to the two lowest subbands including bulk and structure inversion asymmetric terms. The plasmon dispersion shows a pronounced anisotropy for GaAsand InAs-based systems. In GaAs this leads to a suppression of plasmons due to Landau dampin...

Optical dephasing of coherent intersubband transitions in a quasi-two-dimensional electron gas

We present a microscopic many-particle theory for the dephasing of coherent intersubband excitations in semiconductor quantum wells including carrier-carrier and carrier-phonon scattering and light propagation effects. The contributions of many-particle processes are nonadditive and thus cannot be treated separately. It is shown that due to nondiagonal correlation contributions, scattering rate...