Atomistic simulations of spin-dynamics

Abstract

Current-induced spin-transfer torque effects form an exciting branch in the field of spintronics with a huge potential for applications. Magnetization dynamics phenomena like switching or GHz frequency precession in spin valves, enhanced Gilbert damping, etc. are all generated by spin-polarized currents in nano-scale structures. Also in a close proximity to technological applications is the held of molecular spintronics where the quantum properties of molecules trapped in constrictions can be utilized to control spin-currents and even engineer spin logic-elements. In order to investigate theoretically spin-transfer torque effects in atomic-scale conductors in this Thesis we develop a combined microscopic description of the magnetization dynamics together with the open-boundary quantum transport of the itinerant electrons.