Dynamic Nuclear Overhauser Shifts in Larmor beats from a quantum well
arXiv:cond-mat/9910475 · doi:10.1016/S0038-1098(00)00074-0
Abstract
The significance of nuclear spin polarisation in time-resolved optical studies of III-V semiconductors is addressed. Electron Larmor beats in pump-probe reflectivity from a GaAs/AlGaAs quantum well show Overhauser shift of 0.7 T due to accumulated nuclear polarisation <I>/I=0.065. This leads to precision values of electron g-factor, elucidates nuclear spin pumping and diffusion mechanisms in quantum wells and informs discussion of implications for spin-electronics and transport.
9 pages, 2 figures