NUCLEAR SPIN DYNAMICS IN SEMICONDUCTOR NANOSTRUCTURES

In this chapter we present a theoretical analysis of the role played by nuclear spins in low dimensional semiconductor nanostructures. The hyperfine interaction between nuclear and electronic spins provides the basis for an efficient control of nuclear spin dynamics in systems with low dimensionality. We will address topics such as the nuclear spin relaxation time, dynamical nuclear polarization, induced hyperfine magnetic fields, and Overhauser shifts in the electronic spin resonance frequencies. Our example case is a parabolic quantum well, a structure which presents the advantage of simple analytical results.