The study of changes in the refractive indices (with consequent changes of birefringence) of
a transparent magnetic crystal which accompany changes in the magnetic order is …

The discovery of atomic monolayer magnetic materials has stimulated intense research
activities in the two-dimensional (2D) van der Waals (vdW) materials community. The field is …

We present details of the theory of light scattering by one-and two-magnon excitations, and
compare predictions of the theory with our experimental results in the tetragonal …

Abstract Strong two-magnon (2 M) Raman scattering has been observed from NiO along
with first-and second-order phonon scattering. The shape of the 2 M scattering peak is well …

For periodic crystals Eq.(1) may be easily where P is the electric dipole moment oper-
ator,«(y&-y) the energy required in trans-ferring an electron from y to cp&, and y and p~ any …

The symmetry properties of a magnetically ordered crystal are normally described in terms of
the magnetic space group. But the dominant interactions, Heisenberg exchange and …

The contributions of magnons to the optical properties of antiferromagnets having the rutile
structure are discussed. The properties considered are electric-dipole active two-magnon …

We report the observation of light scattering from two-magnon excitations in RbMn F 3. The
shape and polarization of the spectrum are compared with theoretical predictions of Elliott et …

We present the results of a detailed theoretical and experimental investigation of the A 1 g 6
to T 1 g 4 optical absorption in Mn F 2. This transition is one in which a spin-wave sideband …

Magnetism in Crystalline Materials covers the applications of the theory of groups of
cambiant symmetry and the physical properties of magnetically ordered crystalline solids …