On your paper "Extended pump-probe Faraday rotation spectroscopy of the submicrosecond electron spin dynamics in n-type GaAs", I believe that the light spin (the continuous spin obtainable from analyzing Maxwell's equations) may interact with electron spins (under your investigation).
I don't understand what the question is.
However, when you have light-matter-interaction in GaAs, then mind the fact that the band structure near Gamma is also influenced by spin orbit interaction. That is what usually permits influencing spins by light.
Using GaAs and special surface treatment (lowering the work function by adsorption of Cs) this is used to produced spin polarized electron beams. Under normal circumstances, the polarization is less than one due to the degeneracy of the j=3/2 states (no pure spin states). Imposing strain on the crystal this degeneracy can be lifted and nearly 100% spin polarization obtained.
All this is pretty much (I think) understood without direct light-spin-interaction.
- Badges
- Science topic
- Similar topics
- Physics
- Condensed Matter Physics