Spin Structures and Spin Wave Excitations

Abstract

Electronic spin interactions and the resulting spin structures which give rise to various kinds of magnetism existing in many‐electron condensed matter systems are discussed. In most cases, spin structure and excitations in a spin system can be understood in the framework of semiclassical spin‐wave theory. Basic examples observed in magnetic neutron diffraction and inelastic magnetic neutron scattering experiments are presented and discussed with reference to such description. Relationship between the structure of the crystal lattice and spin arrangement and energy dispersion of spin excitations in the crystal are discussed and illustrated by some recent experimental results.

Physical model of neutron scattering by clathrate hydrate and C 60 hosting paramagnetic oxygen molecules

“…Magnetic * Author to whom any correspondence should be addressed. electronic systems offer possibilities for energy transfer of neutrons due to their non-zero spin [11][12][13], which was proposed to be used for producing VCNs [14].…”