Abstract:
In the framework of the general hydrodynamic approach a method is proposed for describing the relaxation of low-frequency magnetic excitations in disordered spin systems and many-sublattice magnets. Expressions are obtained in terms of Goldstone fields for the dissipation function both in the exchange approximation and when allowance is made for relativistic interactions.
Citation:
V. G. Bar'yakhtar, V. G. Belykh, T. K. Soboleva, “Macroscopic theory of relaxation of collective excitations in disordered and noncollinear magnets”, TMF, 77:2 (1988), 311–318; Theoret. and Math. Phys., 77:2 (1988), 1221–1226