Local light-induced spin manipulation in two magnetic centre metallic chains

In this paper localized optically induced spin dynamics is presented, based on highly correlational ab initio calculations. Two-magnetic-centre metallic chains are chosen as a material on which the total spin is always found to lie on one of the magnetic centres only. Switching is achieved through a Λ-process driven by a laser pulse whose parameters are optimized with a genetic algorithm. Locally switching the spin on the iron side of a Co–Na–Fe cluster is given as an example of local spin manipulation.