Hydrodynamic model for relaxation of optically injected currents in quantum wells

Abstract

We use a hydrodynamic model to describe the relaxation of optically injected currents in quantum wells on a picosecond time scale, numerically solving the continuity and velocity evolution equations with the Hermite-Gaussian functions employed as a basis. The interplay of the long-range Coulomb forces and nonlinearity in the equations of motion leads to rather complex patterns of the calculated charge and current densities. We find that the time dependence of even the first moment of the electron density is sensitive to this complex evolution.

9 pages, 4 figures; version slightly longer than published

References in corpus (5)

• Hot-electron effect in spin dephasing in $n$-type GaAs quantum wells
• Spin relaxation in $n$-type GaAs quantum wells from a full microscopic approach
• Modeling for Semiconductor Spintronics
• Ultrafast extrinsic spin-Hall currents
• Optically-Induced Suppression of Spin Relaxation in Two-Dimensional Electron Systems with Rashba Interaction

Cited by in corpus (1)

• Mode coupling and evolution in broken-symmetry plasmas