Theory of magnetoelectric photocurrent generated by direct interband transitions in a semiconductor quantum well

Title Theory of magnetoelectric photocurrent generated by direct interband transitions in a semiconductor quantum well

Magnetoelectric photocurrent generated by direct interband transitions in InGaAs/InAlAs two-dimensional electron gas.

We report the observation of magnetoelectric photocurrent generated via direct interband transitions in an InGaAs/InAlAs two-dimensional electron gas by a linearly polarized incident light. The electric current is proportional to the in-plane magnetic field, which unbalances the velocities of the photoexcited carriers with opposite spins and consequently generates the electric current from a hi...

Optical conductivity and direct interband transitions in Gd

Structure found in the optical conductivity for radiation polarized parallel and perpendicular to the c-axis of a single-crystal of Gd below the Curie temperature has been correlated with direct interband transitions as derived from the spin-polarized conduction bands with the inclusion of the spin-orbit interaction as a perturbation. Spin-flip transitions not allowed for in the eleclric dipole...

Slow optical solitons via intersubband transitions in a semiconductor quantum well

We show the formation of bright and dark slow optical solitons based on intersubband transitions in a semiconductor quantum well (SQW). Using the coupled Schrödinger-Maxwell approach, we provide both analytical and numerical results. Such a nonlinear optical process may be used for the control technology of optical delay lines and optical buffers in the SQW solid-state system. With appropriate ...

Laser-induced quantum coherence in a semiconductor quantum well.

The phenomenon of electromagnetically induced quantum coherence is demonstrated between three confined electron subband levels in a quantum well which are almost equally spaced in energy. Applying a strong coupling field, two-photon resonant with the 1-3 intersubband transition, produces a pronounced narrow transparency feature in the 1-2 absorption line. This result can be understood in terms ...