Abstract
In this paper we examine the nature of two-magnon excitations in the alternating-bond ferrimagnetic spin chain for general values S and S’ of the two species of spin. Both a direct analytic approach as well as a method based on a scaling transformation are used to study the bound-state branches and their relationship to the two-magnon continuum.
- Received 12 June 1990
DOI:https://doi.org/10.1103/PhysRevB.43.816
©1991 American Physical Society