Magnon-Phonon Localization and Quasielastic Spectral Response in Quasi-One-Dimensional Heisenberg Ferromagnets
Localized soliton excitations in a quasi-one-dimensional isotropic Heisenberg ferromagnet are investigated by explicitly accounting for coupling between the magnetic subsystem and longitudinal lattice vibrations. In the low-temperature regime, spin operators are bosonized using the Holstein-Primakoff transformation. In...