Electron Spin Evolution Induced by Hyperfine Interaction with Nuclear Spins in a 2d Quantum Dot

Abstract

We study the electron spin dynamics in 2D - quantum dots due to the hyperfine interaction with surrounding nuclear spins. The study shows that electron spin dynamics depends strongly on the initial state and polarization of the nuclear spin system. Obtained results has shown that electron spin dynamics is reproducible with initial randomly correlated states but depends on the individual initial tensor product state. The decay of electron spin does not have an exponential character, instead of it a power is given.