Magnon Spintronics

This chapter addresses a selection of fundamental topics that form the basis of the magnon-based computing and are of primary importance for the further development of theconcept. It examines the transport of spin-wave-carried information in one and two dimensions that is required for the realization of logic elements and integrated magnon circuits is covered. The chapter discusses the converters between spin waves and electron currents. It provides a basic knowledge of spin waves in the most commonly used structure, a spin-wave waveguide in the form of a narrow strip. The main spin-wave characteristics can be obtained from the analysis of its dispersion relation, that is, the dependence of the wave frequency on its wavenumber k. Spin waves are usually studied in nanometer-thick and micrometer-wide waveguides and, several additional factors, which define spin-wave properties, should be considered. The fabrication of high-quality spin-wave waveguides in the form of magnetic strips is also one of the primary tasks in the field of magnonics.