Spin-orbit excitations of quantum wells

Abstract

Confinement asymmetry effects on the photoabsorption of a quantum well are discussed by means of a sum-rules approach using a Hamiltonian including a Rashba spin-orbt coupling. We show that while the strength of the excitation is zero when the spin-orbit coupling is neglected, the inclusion of the spin-orbit interaction gives rise to a non zero strength and mean excitation energy in the far-infrared region. A simple expression for these quantities up to the second order in the Rashba parameter was derived. The effect of two-body Coulomb interaction is then studied by means of a Quantum Monte Carlo calculation, showing that electron-electron correlations induce only a small deviation from the independent particle model result.

References in corpus (4)

• Dissipationless Quantum Spin Current at Room Temperature
• Intersubband-induced spin-orbit interaction in quantum wells
• Transverse Electron Focusing in Systems with Spin-Orbit Coupling
• Quantum Monte Carlo study of the two-dimensional electron gas in presence of Rashba interaction

Cited by in corpus (4)

• Variational Monte Carlo for spin-orbit interacting systems
• Polarization of a quasi two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling: a variational study
• Dynamical spin properties of confined Fermi and Bose systems in presence of spin-orbit coupling
• Effective spin-orbit models using correlated first-principles wave functions