Energy-efficient control of topological magnetic textures

In the proposed project I will explore to what extent the energy consumption for the manipulation of topological magnetic textures can be minimized by properly tuning control pulses of external magnetic field and electric current.

The project aims at prediction of energy-efficient control protocols for nucleation, displacement and transformation of domain walls, vortices and various skyrmionic textures, determination of the link between optimal control and materials fundamentals and identification of theoretical limits for energy-efficient control of magnetic textures.

To reach the desired goals, a new theoretical framework for optimal control of magnetization will be developed first and then applied to the manipulation of various structures.

Methodology of the project involves an original theoretical approach based on definite identification of optimal transition paths between target magnetic states.

Optimal control pulses will be systematically derived from such paths, thereby designed from first principles based on the intrinsic properties of a given system.

The processes studied in the proposed project are physical realizations of bit operations in digital devises, therefore the obtained results will facilitate the development of energy-efficient information and communication technologies based on topological magnetic states.

This project essentially links the realms of optimal control and topological magnetic states, thus establishing a new field of research.