Frey, Erwin; Schwabl, F.; Thoma, S.
Shape functions of dipolar ferromagnets at the Curie point.
In: Physics Letters A, Vol. 129, No. 5-6: pp. 343-349
We present a complete mode coupling theory for the critical dynamics of ferromagnets above the Curie point with both short range exchange and long range dipolar interaction. This theory allows us to determine the full Kubo relaxation functions at the critical point. In particular, we are able to explain recent spin echo measurements.