Magnetic excitation in CsCoCl₃: an interpretation of Raman scattering results

Abstract

The authors derive an analytic expression for the magnon line positions of a quasi-one-dimensional antiferromagnet like CsCoCl₃. The results obtained from this expression show excellent agreement with the values obtained from Raman scattering experiments. Some analytical calculations have also been performed to explain the hitherto unexplained experimental observation that once the magnon lines cross the phonon line position at 118 cm^-1 the peaks disappear and cannot be traced.